Influence of Romanesque architecture

Romanesque architecture is an architectural style of medieval Europe characterized by semi-circular arches. There is no consensus for the beginning date of the Romanesque style, with proposals ranging from the 6th to the 11th century, this later date being the most commonly held. It developed in the 12th century into the Gothic style, marked by pointed arches. Examples of Romanesque architecture can be found across the continent, making it the first pan-European architectural style since Imperial Roman architecture. The Romanesque style in England is traditionally referred to as Norman architecture.

Combining features of ancient Roman and Byzantine buildings and other local traditions, Romanesque architecture is known by its massive quality, thick walls, round arches, sturdy pillars, barrel vaults, large towers and decorative arcading. Each building has clearly defined forms, frequently of very regular, symmetrical plan; the overall appearance is one of simplicity when compared with the Gothic buildings that were to follow. The style can be identified right across Europe, despite regional characteristics and different materials.

Ecclesiastical architecture
Plan
Many parish churches, abbey churches and cathedrals are in the Romanesque style, or were originally built in the Romanesque style and have subsequently undergone changes. The simplest Romanesque churches are aisless halls with a projecting apse at the chancel end, or sometimes, particularly in England, a projecting rectangular chancel with a chancel arch that might be decorated with mouldings. More ambitious churches have aisles separated from the nave by arcades.

Abbey and cathedral churches generally follow the Latin Cross plan. In England, the extension eastward may be long, while in Italy it is often short or non-existent, the church being of T plan, sometimes with apses on the transept ends as well as to the east. In France the church of St Front, Périgueux, appears to have been modelled on St. Mark’s Basilica, Venice, or the Byzantine Church of the Holy Apostles and is of a Greek cross plan with five domes. In the same region, Angoulême Cathedral is an aisless church of the Latin cross plan, more usual in France, but is also roofed with domes. In Germany, Romanesque churches are often of distinctive form, having apses at both east and west ends, the main entrance being central to one side. It is probable that this form came about to accommodate a baptistery at the west end.

Section
In section, the typical aisled church or cathedral has a nave with a single aisle on either side. The nave and aisles are separated by an arcade carried on piers or on columns. The roof of the aisle and the outer walls help to buttress the upper walls and vault of the nave, if present. Above the aisle roof are a row of windows known as the clerestory, which give light to the nave. During the Romanesque period there was a development from this two-stage elevation to a three-stage elevation in which there is a gallery, known as a triforium, between the arcade and the clerestory. This varies from a simple blind arcade decorating the walls, to a narrow arcaded passage, to a fully developed second story with a row of windows lighting the gallery.

Church and cathedral east ends
The eastern end of a Romanesque church is almost always semi-circular, with either a high chancel surrounded by an ambulatory as in France, or a square end from which an apse projects as in Germany and Italy. Where square ends exist in English churches, they are probably influenced by Anglo Saxon churches. Peterborough and Norwich Cathedrals have retained round east ends in the French style. However, in France, simple churches without apses and with no decorative features were built by the Cistercians who also founded many houses in England, frequently in remote areas.

Church and cathedral façades and external decoration
Romanesque church facades, generally to the west end of the building, are usually symmetrical, have a large central portal made significant by its mouldings or porch, and an arrangement of arched-topped windows. In Italy there is often a single central ocular or wheel window. The common decorative feature is arcading.

Smaller churches often have a single tower that is usually placed to the western end in France or England, either centrally or to one side, while larger churches and cathedrals often have two.

In France, Saint-Étienne, Caen, presents the model of a large French Romanesque facade. It is a symmetrical arrangement of nave flanked by two tall towers each with two buttresses of low flat profile that divide the facade into three vertical units. The lowest stage is marked by large doors, each set within an arch in each of the three vertical sections. The wider central section has two tiers of three identical windows, while in the outer sections there are two tiers of single windows, giving emphasis to the mass of the towers. The towers rise above the facade through three further tiers, the lowest of tall blind arcading, the next of arcading pierced by two narrow windows and the third of two large windows, divided into two lights by a colonnette.

This facade can be seen as the foundation for many other buildings, including both French and English Gothic churches. While the form is typical of northern France, its various components were common to many Romanesque churches of the period across Europe. Similar facades are found in Portugal. In England, Southwell Cathedral has maintained this form, despite the insertion of a huge Gothic window between the towers. Lincoln and Durham must once have looked like this. In Germany, Limburg Cathedral has a rich variety of openings and arcades in horizontal storeys of varying heights.

The churches of San Zeno Maggiore, Verona, and San Michele, Pavia, present two types of facade that are typical of Italian Romanesque, that which reveals the architectural form of the building, and that which screens it. At San Zeno, the components of nave and aisles are made clear by the vertical shafts that rise to the level of the central gable and by the varying roof levels. At San Miniato al Monte the definition of the architectural parts is made even clearer by the polychrome marble, a feature of many Italian Medieval facades, particularly in Tuscany. At San Michele the vertical definition is present as at San Zeno, but the rooflines are screened behind a single large gable decorated with stepped arcading. At Santa Maria della Pieve, Arezzo, this screening is carried even further, as the roofline is horizontal and the arcading rises in many different levels while the colonettes that support them have a great diversity of decoration.

In the Rhineland and Netherlands the Carolingian form of west end known as the westwerk prevailed. Towers and apse of the western end are often incorporated into a multi-storey structure that bears little structural or visual relationship to the building behind it. These westwerks take a great variety of forms as may be seen at Maria Laach Abbey, St Gertrude, Nivelles, and St Serviatius, Maastricht.

Church towers
Towers were an important feature of Romanesque churches and a great number of them are still standing. They take a variety of forms: square, circular and octagonal, and are positioned differently in relation to the church building in different countries. In northern France, two large towers, such as those at Caen, were to become an integral part of the facade of any large abbey or cathedral. In central and southern France this is more variable and large churches may have one tower or a central tower. Large churches of Spain and Portugal usually have two towers.

Many abbeys of France, such as that at Cluny, had many towers of varied forms. This is also common in Germany, where the apses were sometimes framed with circular towers and the crossing surmounted by an octagonal tower as at Worms Cathedral. Large paired towers of square plan could also occur on the transept ends, such as those at Tournai Cathedral in Belgium. In Germany, where four towers frequently occur, they often have spires that may be four or eight sided, or the distinctive Rhenish helm shape seen on the cathedrals of Limburg or Speyer. It is also common to see bell or onion-shaped spires of the Baroque period surmounting Romanesque towers in central and Eastern Europe.

In England, for large abbeys and cathedral buildings, three towers were favoured, with the central tower being the tallest. This was often not achieved, through the slow process of the building stages, and in many cases the upper parts of the tower were not completed until centuries later as at Durham and Lincoln. Large Norman towers exist at the cathedrals of Durham, Exeter, Southwell, Norwich and Tewkesbury Abbey. Such towers were often topped during the late Medieval period with a Gothic spire of wooden construction covered with lead, copper or shingles. In the case of Norwich Cathedral, the huge, ornate, 12th-century crossing-tower received a 15th-century masonry spire rising to a height of 320 feet and remaining to this day.

In Italy towers are almost always free standing and the position is often dictated by the landform of the site, rather than aesthetics. This is the case in nearly all Italian churches both large and small, except in Sicily where a number of churches were founded by the Norman rulers and are more French in appearance.

As a general rule, large Romanesque towers are square with corner buttresses of low profile, rising without diminishing through the various stages. Towers are usually marked into clearly defined stages by horizontal courses. As the towers rise, the number and size of openings increases as can be seen on the right tower of the transept of Tournai Cathedral where two narrow slits in the fourth level from the top becomes a single window, then two windows, then three windows at the uppermost level. This sort of arrangement is particularly noticeable on the towers of Italian churches, which are usually built of brick and may have no other ornament. Two fine examples occur at Lucca, at the church of San Frediano and at the Duomo. It is also seen in Spain.

In Italy there are a number of large free-standing towers that are circular, the most famous of these being the Leaning Tower of Pisa. In other countries where circular towers occur, such as Germany, they are usually paired and often flank an apse. Circular towers are uncommon in England, but occur throughout the Early Medieval period in Ireland.

Polygonal towers were often used on crossings and occur in France, Germany, Italy and Spain such as that of the Old Cathedral, Salamanca, which is covered by a dome supported on a ribbed vault.

Smaller churches sometimes had bell-gables instead of towers, a feature which, according to some authors, is characteristic of the simplicity of much architecture in the Romanesque style.

Portals
Romanesque churches generally have a single portal centrally placed on the west front, the focus of decoration for the facade of the building. Some churches such as Saint-Étienne, Caen, (11th century) and Pisa Cathedral (late 12th century) had three western portals, in the manner of Early Christian basilicas. Many churches, both large and small, had lateral entrances that were commonly used by worshippers.

Romanesque doorways have a character form, with the jambs having a series of receding planes, into each of which is set a circular shaft, all surmounted by a continuous abacus. The semi-circular arch which rises from the abacus has the same seried planes and circular mouldings as the jambs. There are typically four planes containing three shafts, but there may be as many as twelve shafts, symbolic of the apostles.

The opening of the portal may be arched, or may be set with a lintel supporting a tympanum, generally carved, but in Italy sometimes decorated with mosaic or fresco. A carved tympanum generally constitutes the major sculptural work of a Romanesque church. The subject of the carving on a major portal may be Christ in Majesty or the Last Judgement. Lateral doors may include other subjects such as the Birth of Christ. The portal may be protected by a porch, with simple open porches being typical of Italy, and more elaborate structures typical of France and Spain.

Interiors
The structure of large churches differed regionally and developed across the centuries. The use of piers of rectangular plan to support arcades was common, as at Mainz Cathedral and St Gertrude Nivelle, and remained usual in smaller churches across Europe, with the arcades often taking the form of openings through the surface of a wall. In Italy, where there was a strong tradition of using marble columns, complete with capital, base and abacus, this remained prevalent, often reusing existent ancient columns, as at San Miniato al Monte. A number of 11th-century churches have naves distinguished by huge circular columns with no clerestory, or a very small one as at St Philibert, Tournus. In England stout columns of large diameter supported decorated arches, gallery and clerestory, as at the nave of Malmesbury Abbey (see “Piers and columns”, above). By the early 12th century composite piers had evolved, in which the attached shafts swept upward to a ribbed vault or were continued into the mouldings of the arcade, as at Vézelay Abbey, Saint-Étienne, Caen, and Peterborough Cathedral.

The nature of the internal roofing varied greatly, from open timber roofs, and wooden ceilings of different types, which remained common in smaller churches, to simple barrel vaults and groin vaults and increasingly to the use of ribbed vaults in the late 11th and 12th centuries, which were to become a common feature of larger abbey churches and cathedrals. A number of Romanesque churches are roofed with a series of Domes. At Fontevrault Abbey the nave is covered by four domes, while at the Church of Saint Front, Périgueux, the church is of Greek cross plan, with a central dome surrounded by four smaller domes over the nave, chancel and transepts.

Internal decoration varied across Europe. Where wide expanses of wall existed, they were often plastered and painted. Wooden ceilings and timber beams were decorated. In Italy walls were sometimes faced with polychrome marble. Where buildings were constructed of stone that was suitable for carving, many decorative details occur, including ornate capitals and mouldings.

The apsidal east end was often a focus of decoration, with both architectonic forms such as arcading and pictorial features such as carved figures, murals and occasionally mosaics. Stained glass came into increasing use from the 11th century. In many churches the eastern end has been rebuilt in a later style. Of England’s Norman cathedrals, no eastern end remains unchanged. In France the eastern terminals of the important abbeys of Caen, Vézelay and, most significantly, the Basilica of St Denis were completely rebuilt in the Gothic style. In Germany, major reconstructions of the 19th century sought to return many Romanesque buildings to their original form. Examples of simple Romanesque apses can be seen in the images of St Gertrude, Nivelles; St Philibert, Tournus, and San Miniato al Monte.

Other structures
Among the structures associated with church buildings are crypts, porches, chapter houses, cloisters and baptisteries.

Crypts are often present as an underlying structure to a substantial church, and are generally a completely discrete space, but occasionally, as in some Italian churches, may be a sunken space under a raised chancel and open, via steps, to the body of the nave. Romanesque crypts have survived in many instances, such as Canterbury Cathedral, when the church itself has been rebuilt. The usual construction of a Romanesque crypt is with many short stout columns carrying groin vaults, as at Worcester Cathedral.

Porches sometimes occur as part of the original design of a facade. This is very much the case in Italy, where they are usually only one bay deep and are supported on two columns, often resting on couchant lions, as at St Zeno, Verona.See above. Elsewhere, porches of various dates have been added to the facade or side entrance of existent churches and may be quite a substantial structure, with several bays of vaulting supported on an open or partially open arcade, and forming a sort of narthex as at the Church of St Maria, Laach.See above In Spain, Romanesque churches often have large lateral porches, like loggias.

Chapter houses often occur adjacent to monastic or cathedral churches. Few have survived intact from the Romanesque period. Early chapter houses were rectangular in shape, with the larger ones sometimes having groin or ribbed vaults supported on columns. Later Romanesque chapter houses sometimes had an apsidal eastern end. The chapter house at Durham Cathedral is a wide space with a ribbed vault, restored as originally constructed in 1130. The circular chapter house at Worcester Cathedral, built by Bishop Wulfstan (1062–95), was the first circular chapter house in Europe and was much imitated in England.

Cloisters are generally part of any monastic complex and also occur at cathedral and collegiate churches. They were essential to the communal way of life, a place for both working during daylight hours and relaxing during inclement weather. They usually abut the church building and are enclosed with windowless walls on the outside and an open arcade on the inside, looking over a courtyard or “cloister garth”. They may be vaulted or have timber roofs. The arcades are often richly decorated and are home to some of the most fanciful carved capitals of the Romanesque period with those of Santo Domingo de Silos in Spain and the Abbey of St Pierre Moissac, being examples. Many Romanesque cloisters have survived in Spain, France, Italy and Germany, along with some of their associated buildings.

Baptisteries often occur in Italy as a free standing structure, associated with a cathedral. They are generally octagonal or circular and domed. The interior may be arcaded on several levels as at Pisa Cathedral. Other notable Romanesque baptisteries are that at Parma Cathedral remarkable for its galleried exterior, and the polychrome Baptistery of San Giovanni of Florence Cathedral, with vault mosaics of the 13th century including Christ in Majesty, possibly the work of the almost legendary Coppo di Marcovaldo.

Decoration

Architectural embellishment
Arcading is the single most significant decorative feature of Romanesque architecture. It occurs in a variety of forms, from the Lombard band, which is a row of small arches that appear to support a roofline or course, to shallow blind arcading that is often a feature of English architecture and is seen in great variety at Ely Cathedral, to the open dwarf gallery, first used at Speyer Cathedral and widely adopted in Italy as seen on both Pisa Cathedral and its famous Leaning Tower. Arcades could be used to great effect, both externally and internally, as exemplified by the church of Santa Maria della Pieve, in Arezzo.

Architectural sculpture
The Romanesque period produced a profusion of sculptural ornamentation. This most frequently took a purely geometric form and was particularly applied to mouldings, both straight courses and the curved moldings of arches. In La Madeleine, Vezelay, for example, the polychrome ribs of the vault are all edged with narrow filets of pierced stone. Similar decoration occurs around the arches of the nave and along the horizontal course separating arcade and clerestory. Combined with the pierced carving of the capitals, this gives a delicacy and refinement to the interior.

In England, such decoration could be discrete, as at Hereford and Peterborough cathedrals, or have a sense of massive energy as at Durham where the diagonal ribs of the vaults are all outlined with chevrons, the mouldings of the nave arcade are carved with several layers of the same and the huge columns are deeply incised with a variety of geometric patterns creating an impression of directional movement. These features combine to create one of the richest and most dynamic interiors of the Romanesque period.

Although much sculptural ornament was sometimes applied to the interiors of churches, the focus of such decoration was generally the west front, and in particular, the portals. Chevrons and other geometric ornaments, referred to by 19th-century writers as “barbaric ornament”, are most frequently found on the mouldings of the central door. Stylized foliage often appears, sometimes deeply carved and curling outward after the manner of the acanthus leaves on Corinthian capitals, but also carved in shallow relief and spiral patterns, imitating the intricacies of manuscript illuminations. In general, the style of ornament was more classical in Italy, such as that seen around the door of San Giusto in Lucca, and more “barbaric” in England, Germany and Scandinavia, such as that seen at Lincoln and Speyer Cathedrals. France produced a great range of ornament, with particularly fine interwoven and spiralling vines in the “manuscript” style occurring at Saint-Sernin, Toulouse.

Figurative sculpture
With the fall of the Roman Empire, the tradition of carving large works in stone and sculpting figures in bronze died out. The best-known surviving large sculptural work of Proto-Romanesque Europe is the life-size wooden Crucifix commissioned by Archbishop Gero of Cologne in about 960–65. During the 11th and 12th centuries, figurative sculpture flourished in a distinctly Romanesque style that can be recognised across Europe, although the most spectacular sculptural projects are concentrated in South-Western France, Northern Spain and Italy.

Major figurative decoration occurs particularly around the portals of cathedrals and churches, ornamenting the tympanum, lintels, jambs and central posts. The tympanum is typically decorated with the imagery of Christ in Majesty with the symbols of the Four Evangelists, drawn directly from the gilt covers of medieval Gospel Books. This style of doorway occurs in many places and continued into the Gothic period. A rare survival in England is that of the “Prior’s Door” at Ely Cathedral. In France, many have survived, with impressive examples at the Abbey of Saint-Pierre, Moissac, the Abbey of Sainte-Marie, Souillac, and Abbey of la Madaleine, Vézelay – all daughter houses of Cluny, with extensive other sculpture remaining in cloisters and other buildings. Nearby, Autun Cathedral has a Last Judgement of great rarity in that it has uniquely been signed by its creator Giselbertus (who was perhaps the patron rather than the sculptor). The same artist is thought to have worked at la Madaleine Vezelay which uniquely has two elaborately carved tympanum, the early inner one representing the Last Judgement and that on the outer portal of the narthex representing Jesus sending forth the Apostles to preach to the nations.

It is a feature of Romanesque art, both in manuscript illumination and sculptural decoration, that figures are contorted to fit the space that they occupy. Among the many examples that exist, one of the finest is the figure of the Prophet Jeremiah from the pillar of the portal of the Abbey of Saint-Pierre, Moissac, France, from about 1130. A significant motif of Romanesque design is the spiral, a form applied to both plant motifs and drapery in Romanesque sculpture. An outstanding example of its use in drapery is that of the central figure of Christ on the outer portal at La Madaleine, Vezelay.

Many of the smaller sculptural works, particularly capitals, are Biblical in subject and include scenes of Creation and the Fall of Man, episodes from the life of Christ and those Old Testament scenes that prefigure his Death and Resurrection, such as Jonah and the Whale and Daniel in the lions’ den. Many Nativity scenes occur, the theme of the Three Kings being particularly popular. The cloisters of Santo Domingo de Silos Abbey in Northern Spain, and Moissac are fine examples surviving complete.

Murals
The large wall surfaces and plain curving vaults of the Romanesque period lent themselves to mural decoration. Unfortunately, many of these early wall paintings have been destroyed by damp or the walls have been replastered and painted over. In most of Northern Europe such pictures were systematically destroyed in bouts of Reformation iconoclasm. In other countries they have suffered from war, neglect and changing fashion.

A classic scheme for the full painted decoration of a church, derived from earlier examples often in mosaic, had, as its focal point in the semi-dome of the apse, Christ in Majesty or Christ the Redeemer enthroned within a mandorla and framed by the four winged beasts, symbols of the Four Evangelists, comparing directly with examples from the gilt covers or the illuminations of Gospel Books of the period. If the Virgin Mary was the dedicatee of the church, she might replace Christ here. On the apse walls below would be saints and apostles, perhaps including narrative scenes, for example of the saint to whom the church was dedicated. On the sanctuary arch were figures of apostles, prophets or the twenty-four “elders of the Apocalypse”, looking in towards a bust of Christ, or his symbol the Lamb, at the top of the arch. The north wall of the nave would contain narrative scenes from the Old Testament, and the south wall from the New Testament. On the rear west wall would be a Doom painting or Last Judgement, with an enthroned and judging Christ at the top.

One of the most intact schemes to exist is that at Saint-Savin-sur-Gartempe in France. (See picture above under “Vault”) The long barrel vault of the nave provides an excellent surface for fresco, and is decorated with scenes of the Old Testament, showing the Creation, the Fall of Man and other stories including a lively depiction of Noah’s Ark complete with a fearsome figurehead and numerous windows through with can be seen the Noah and his family on the upper deck, birds on the middle deck, while on the lower are the pairs of animals. Another scene shows with great vigour the swamping of Pharaoh’s army by the Red Sea. The scheme extends to other parts of the church, with the martyrdom of the local saints shown in the crypt, and Apocalypse in the narthex and Christ in Majesty. The range of colours employed is limited to light blue-green, yellow ochre, reddish brown and black. Similar paintings exist in Serbia, Spain, Germany, Italy and elsewhere in France.

Stained glass
The oldest-known fragments of medieval pictorial stained glass appear to date from the 10th century. The earliest intact figures are five prophet windows at Augsburg, dating from the late 11th century. The figures, though stiff and formalised, demonstrate considerable proficiency in design, both pictorially and in the functional use of the glass, indicating that their maker was well accustomed to the medium. At Canterbury and Chartres Cathedrals, a number of panels of the 12th century have survived, including, at Canterbury, a figure of Adam digging, and another of his son Seth from a series of Ancestors of Christ. Adam represents a highly naturalistic and lively portrayal, while in the figure of Seth, the robes have been used to great decorative effect, similar to the best stone carving of the period.

Many of the magnificent stained glass windows of France, including the famous windows of Chartres, date from the 13th century. Far fewer large windows remain intact from the 12th century. One such is the Crucifixion of Poitiers, a remarkable composition that rises through three stages, the lowest with a quatrefoil depicting the Martyrdom of St Peter, the largest central stage dominated by the crucifixion and the upper stage showing the Ascension of Christ in a mandorla. The figure of the crucified Christ is already showing the Gothic curve. The window is described by George Seddon as being of “unforgettable beauty”.

Transitional style and the continued use of Romanesque forms
During the 12th century, features that were to become typical of Gothic architecture began to appear. It is not uncommon, for example, for a part of building that has been constructed over a lengthy period extending into the 12th century, to have very similar arcading of both semi-circular and pointed shape, or windows that are identical in height and width, but in which the later ones are pointed. This can be seen on the towers of Tournai Cathedral and on the western towers and facade at Ely Cathedral. Other variations that appear to hover between Romanesque and Gothic occur, such as the facade designed by Abbot Suger at the Abbey of Saint-Denis, which retains much that is Romanesque in its appearance, and the Facade of Laon Cathedral, which, despite its Gothic form, has round arches.

Romanesque castles, houses and other buildings
The Romanesque period was a time of great development in the design and construction of defensive architecture. After churches and the monastic buildings with which they are often associated, castles are the most numerous type of building of the period. While most are in ruins through the action of war and politics, others, like William the Conqueror’s White Tower within the Tower of London have remained almost intact.

Examples of all these types of buildings can be found scattered across Europe, sometimes as isolated survivals like the two merchants’ houses on opposite sides of Steep Hill in Lincoln, England, and sometimes giving form to a whole medieval city like San Gimignano in Tuscany, Italy. These buildings are the subject of a separate article.

Romanesque Revival
During the 19th century, when Gothic Revival architecture was fashionable, buildings were occasionally designed in the Romanesque style. There are a number of Romanesque Revival churches, dating from as early as the 1830s and continuing into the 20th century where the massive and “brutal” quality of the Romanesque style was appreciated and designed in brick.

The Natural History Museum, London, designed by Alfred Waterhouse, 1879, on the other hand, is a Romanesque revival building that makes full use of the decorative potential of Romanesque arcading and architectural sculpture. The Romanesque appearance has been achieved while freely adapting an overall style to suit the function of the building. The columns of the foyer, for example, give an impression of incised geometric design similar to those of Durham Cathedral. However, the sources of the incised patterns are the trunks of palms, cycads and tropical tree ferns. The animal motifs, of which there are many, include rare and exotic species.

The type of modern buildings for which the Romanesque style was most frequently adapted was the warehouse, where a lack of large windows and an appearance of great strength and stability were desirable features. These buildings, generally of brick, frequently have flattened buttresses rising to wide arches at the upper levels after the manner of some Italian Romanesque facades. This style was adapted to suit commercial buildings by opening the spaces between the arches into large windows, the brick walls becoming a shell to a building that was essentially of modern steel-frame construction, the architect Henry Hobson Richardson giving his name to the style, Richardsonian Romanesque. Good examples of the style are Marshall Field’s Wholesale Store, Chicago, by H.H. Richardson, 1885, and the Chadwick Lead Works in Boston, USA, by William Preston, 1887. The style also lent itself to the building of cloth mills, steelworks and powerstations.

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