White Tower
It was a defensive tower built during the 15th century. It was used as a guard's quarters and as a prison. It connected the east wall and the south wall, demolished in 1866. Now it operates as a museum with various collections of sculptures, frescoes, fragments, etc. Located at the seaside. ( 270008, 267832)

Byzantine Fortification Walls
The fortification of Thessaloniki can be traced to the time of Cassander. However, the walls still standing today were constructed during the reign of Theodosius the Great (A.D. 400), and were later repaired many times in order to withstand the barbarian invasions. Located at Ano Poli (Upper Town)