A column that does not conform to any of the classical orders.

One of the three classical orders. Generally, it is a more stoutly proportioned column with a simple, round capital. While the shafts of ancient Doric columns were fluted, in the Renaissance, they were often left plain.

One of the three classical orders. Generally, it has the most slender column of all the orders, and its capital is the most ornate, with layers of stylized acanthus leaves. In almost all cases, the shafts of Corinthian columns are fluted.

One of the three classical orders. Generally, it features a more slender column, and its capital is recognized by two volutes. In most cases, the shafts of Ionic columns are fluted.