The White Tower of Thessaloniki (Greek: Λευκός Πύργος Lefkós Pýrgos; Turkish: Beyaz Kule; Ladino: Kuli Blanka) 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 was substantially remodeled and its exterior was whitewashed after Greece gained control of the city in 1912. It has been adopted as the symbol of the city.

The Church of Saint Demetrius, or Hagios Demetrios (Greek: Άγιος Δημήτριος), is the main sanctuary dedicated to Saint Demetrius, the patron saint of Thessaloniki (in Central Macedonia, Greece), dating from a time when it was the second largest city of the Byzantine Empire. It is part of the site Palaeochristian and Byzantine Monuments of Thessaloniki on the list of World Heritage Sites by UNESCO since 1988.

Built in 306 A.D. by the romans, Rotunda is one of the oldest religious sites of the city. Going back to the late 3rd century A.D., after a number of long devastating wars, the romans decided to divide the Empire into 4 regions, each with its own provinces , thus leading to the creation of a new form of leadership, the Tetrarchy.

Galerius Arch (kamara) and Rotunda were basic elements of the palatial complex. Original intensions were predicting its use as a mausoleum, although many archaeologists believe it was initially used as a roman temple. The dimensions of the main structure are quite impressive.