In classical architecture, amphiprostyle (from the Greek ἀμφί (amphi), on both sides, and πρόστυλος (prostylos), a portico) denotes an ancient temple with a portico both at the front and the rear,[1] where the columns on the narrow sides are not between antae.[2] The number of columns rarely exceeded four in the front and four in the rear. The best-known example is the tetrastyle small Temple of Athena Nike at Athens. Other known examples are the Temple of Artemis Agrotera outside Athens,[3] and the hexastyle Temple of the Athenians at Delos.[4]
Amphiprostyle temples without columns on the sides may be termed "apteral" (from the Greek απτερος, "wingless": α-, "without" + πτερον, "wing"). The Athena Nike temple is one such example.[5]