Classical order Classical order An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders are the styles of classical architecture, each distinguished by its proportions and characteristic profiles and details, and most readily recognizable by the type of column employed. The three orders of architecture—the Doric, Ionic, and Corinthian—originated in Greece. To these the Romans added, in practice if not in name, the Tuscan, which they made simpler than Doric, and the
Villa Lante al Gianicolo and elegance to exploit the ridge-top position and overcome the rather small Roman footprint. The orders are delicate, with Tuscan or Doric columns and pilasters in pairs on the main floor, and extremely shallow Ionic pilasters above, whose presence is mainly conveyed by a different colour. Alternate loggia openings are heightened by arches above the entablature. Romano's willingness to play with the conventions of the classical orders is already in evidence; the Doric here has guttae but no triglyphs on its narrow entablature. The volutes of the Ionic capitals of the entrance facade are repeated in the window surrounds between