Tuscan order A plain astragal or taenia ringed the column beneath its plain cap. Palladio agreed in essence with Serlio: "The Tuscan, being rough, is rarely used above ground except in one-storey buildings like villa barns or in huge structures like Amphitheatres and the like which, having many orders, can take this one in place of the Doric, under the Ionic." Unlike the other authors Palladio found Roman precedents, of which he named the arena of Verona and the Pula Arena, both of which, James Ackerman points out, are arcuated buildings that did not present columns and entablatures. A striking feature is
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