The White Tower of Thessaloniki is a monument and museum on the waterfront of the city of Thessaloniki, capital of the region of Macedonia in northern Greece. The present tower replaced an old Byzantine fortification, known to have been mentioned around the 12th century, that the Ottoman Empire reconstructed to fortify the city’s harbour sometime after Sultan Murad II captured Thessaloniki in 1430. The tower became a notorious prison and scene of mass executions during the period of Ottoman rule.

The White Tower takes the form of a cylindrical drum 23 m (75 ft) in diameter with a height of 34 m (112 ft) above ground level, on top of which is a turret 12 m (39 ft) in diameter and 6 m (20 ft) high. Some of the embrasures in the outer wall of the tower are reached by a spiral ramp; others are accessed from a central room on each of the six floors.

The turret houses a platform with a diameter of 10 m (33 ft), and the platform at the top of the main tower in front of the turret is about 5 m (16 ft) wide.

White Tower Museum

The White Tower houses an exhibition dedicated to the city of Thessaloniki and its history throughout various periods, organized by the city’s Museum of Byzantine Culture. It is under the administration of the Ephorate of Byzantine Antiquities of the Greek Ministry of Culture.

The Tower is open to the public, and visitors have the opportunity to view a map of the city with monuments and museums, a timeline with events relevant to Thessaloniki, scientific articles of distinguished historians and archaeologists, bibliography etc. School excursions may be arranged by contacting the Byzantine Museum.