The Gallipoli peninsula is located in Turkish Thrace, the European part of Turkey, with the Aegean Sea to the west and the Dardanelles straits to the east. Gallipoli derives its name from the Greek "Καλλίπολις", meaning "Beautiful City". In antiquity, it was known as the Thracian Chersonese.The peninsula runs in a south-westerly direction into the Aegean Sea, between the Hellespont and the bay of Melas. Near Agora it was protected by a wall running across its full breadth. The isthmus traversed by the wall was only 36 stadia in breadth, but the length of the peninsula from this wall to its southern extremity, Cape Mastusia, was 420 stadia.The Gallipoli Campaign, a notable failed offensive by the Allies in World War I, took place on the Gallipoli peninsula in 1915.