Column cylindrical disks of alternating diameter. The shaft is almost never fluted. The proportions vary, but are generally similar to Doric columns. Height to width ratio is about 7:1. The Ionic column is considerably more complex than the Doric or Tuscan. It usually has a base and the shaft is often fluted (it has grooves carved up its length). The capital features a volute, an ornament shaped like a scroll, at the four corners. The height-to-thickness ratio is around 9:1. Due to the more refined proportions and scroll capitals, the Ionic column is sometimes associated with academic buildings. Ionic style columns
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