THESSALONIKI, GREECE - AUGUST 28 : Aerial view of The White Tower of Thessaloniki on August 28, 2015 in Thessaloniki, Greece. The White Tower of Thessaloniki is a monument and museum on the waterfront of the city of Thessaloniki. An old Byzantine fortification which was mentioned around the 12th century and reconstructed by the Ottomans to fortify the city's harbour it became a notorious prison and scene of mass executions during the period of Ottoman rule. It has been adopted as the symbol of the city. (Photo by Athanasios Gioumpasis/Getty Images)
