This cylindrical tower (23m dia x 27m high)with a turret (12m dia x 6m high) was once a notorious prison cell during Ottoman rule. Each of the 6 floors has been divided with several chambers, and can be accessed through spiral steps. Owing to countless victims of mass executions there, it was called "tower of blood" or "red tower". When Greece got control of the city in 1912, the tower was whitewashed as a sign of cleansing and acquired its present name. Since then, the tower was substantially remodeled, and is now buff in color. Nowadays, it houses the museum of Thessaloniki's history. Standing at the waterfront boulevard, it becomes Thessaloniki's landmark and is now one of the city's leading attractions. (Thessaloniki, Greece / 2010)