The Skull Tower is a monument to 19th century Serbian fighters for freedom. It was built after the battle that took place at the hill Cegar on May 31, 1809, near the town of Nis (pronounced 'Nish'), by the right-hand side of the busy civil and military road to Istanbul. With these skulls, built in the sides of a cubical structure, the Turks wanted to frighten the Serbia and to prevent any other rebellion for national liberation and political independence. At the beginning of the 19th century, fighting against the Turks, the Serbs started a long and an uneven battle for liberation. Fights with the Turks became more and more frequent, and soon they turned into a general rebellion and an all-out uprising of the Serbs.