A module is a term that was in use among Roman architects, corresponding to the semidiameter of the column at its base. The term was first set forth by Vitruvius, and was employed by architects in the
Doric order illustration in Isaac Ware, The Four Books of Andrea Palladio's Architecture, London 1738
Classical architecture typically refers to architecture consciously derived from the principles of Greek and Roman architecture of classical antiquity, or more specifically, from De architectura by th
Caryatids on the Erechtheion (Athens), an example of a Greek architectural element taken up by later classical architecture.
The fronts of ancient Roman temples like the Maison Carrée in Nîmes have inspired much later classical architecture, e.g. Virginia State Capitol.
Lorsch Abbey gatehouse (Germany), c. 800, an example of the architectural style of the short-lived Carolingian Renaissance, a first classical movement in architecture.
The emphatically classical church façade of Santa Maria Nova, Vicenza (1578–90) was designed by the influential Renaissance architect Andrea Palladio.