Araeosystyle (Gr. αραιος, “widely spaced”, and συστυλος, “with columns set close together”), an architectural term applied to a colonnade, in which the intercolumniation is alternately wide and narrow, as in the case of the western porch of St Paul’s Cathedral and the east front of the Louvre by Perrault.

According to Francisco Azorín Areosistilo is a Colony, invented by the French architect Claudius Perrolt, whose intercolar spaces are alternating 2 to 4 modules and 8 or more.

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