A nymphaeum was originally a sanctuary dedicated to the water nymphs, often in or near a cave. For example, Aristotle's school in Mieza was founded in a nymphaeum. In the Hellenistic and Roman world, nymphaea would be monumental fountains in a city, usually at the end of an aqueduct and decorated with all kinds of statues.

Lepcis Magna, Plaza and Nymphaeum	Buthrotum, Nymphaeum	Sagalassus, Antonine Nymphaeum, Facade	Byblos, Roman Nymphaeum
Tipasa, Nymphaeum	Diocaesarea, Nymphaeum	Gerasa, Nymphaeum	Sagalassus, Lower Agora, Nymphaeum