Ionic order edifices antiques de Rome" (Paris 1682). Ionic order The Ionic order forms one of the three classical orders of classical architecture, the other two canonic orders being the Doric and the Corinthian. There are two lesser orders: the Tuscan (a plainer Doric), and the rich variant of Corinthian called the composite order, both added by 16th-century Italian architectural writers, based on Roman practice. Of the three canonic orders, the Ionic order has the narrowest columns. The Ionic capital is characterized by the use of volutes. The Ionic columns normally stand on a base which separates the shaft of the column
Basilica of San Bernardino in three different architectural orders: the first in doric order, the second ionic and the third corinthian. On the trabeation of the first order there are illustrated metops, on the second order there is a refined triple lancet window, which was added during the restoration work in the 18th century, and on the third order there are three big oculuses. Four sequences of double columns vertically divide the church, establishing a suggestive and harmonic diagram of nine squares on three lines. The principal gate is embedded by spiral columns. The lunette includes a Silvestro dell'Aquila's high relief illustrating "Madonna with