Nisaea or Nisaia (Ancient Greek: Νίσαια or Νισαία) was the Saronic port town of the ancient polis Megara.[1] In Greek mythology, Nisaea was founded by one of Pandion II's sons, Nisos, who named the region given to him by his father Nisaea, after himself.[2] Control of Nisaea slipped back and forth between Athens and Megara both before and during the Peloponessian War.[3][4] Athenian allies of the Megarians built long walls which connected Nisaea to Megaris.[5] According to Thucydides, the length of the walls that connected the port to Megara were eight Greek stadia, while Strabo claims the walls to have been 18 stadia in length.[6][7] A temple of Demeter was located on the road near Nisaea, and a temple of Poseidon located within the port town.[8] Nisaean Megara is thought to have been the birthplace of poet Theognis, but his birthplace is not known for certain[9] The location of the ancient port town remains in debate by historians.[4]
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