The Peirene Fountain is distinguished by its long use, service to a great ancient city, and early identification as the site where Pegasus landed and was tamed by Bellerophon. Highlights include the identification of the so-called Cyclopean Fountain as the sacred nymphaeum of Peirene, an analysis of the Romanization of Peirene, a reconsideration of wall paintings and a Scylla sculptural group of the 2nd century A.D., the reassignment of Peirene's triconch court from Herodes Atticus to a benefactor of the 4th century A.D., and proper attention to post-antique developments, including the recognition of several Ottoman fountains of Peirene. Preceding this history are chapters offering physical and cultural orientation, a review of pictorial and poetic imagery, and a chronicle of exploration and management from 1898 to 1941, all crucial for understanding Peirene and its millennial histories.