View as one approaches the first gate (Frankish, 14th century); Acrocorinth, the acropolis of Corinth, is a monolithic rock overseeing the ancient city of Corinth, Greece. It was continuously occupied from archaic times to the early nineteenth century. The city's archaic acropolis, already an easily defendable position due to its geomorphology, was further heavily fortified during the Byzantine Empire as it became the seat of the strategos of the Thema of Hellas. Later it was a fortress of the Franks after the Fourth Crusade, the Venetians and the Ottoman Turks. With its secure water supply [the spring, Upper Peirene, was housed within an underground chamber atop Acrocorinth] Acrocorinth's fortress was used as the last defending line in sou...