Vlatadon Monastery, the only Byzantine monastery in Thessaloniki in operation, is located in Ano Poli near the gate that leads to the Acropolis and is surrounded by the modern buildings of the Patriarchal Institute of Patristic Studies.
Known as Vlattadon Monastery or Vlattaion, as well as Tsaous Monastery, it belongs to the Ecumenical Patriarchate of Constantinople. Among its surviving parts are the impressive sanctuary and a few more architectural elements. The monastery was founded in the 14th century between 1351 and 1371 by the metropolitan of Thessaloniki, Dorotheos Vlatis, and is historically regarded as the place where St. Paul preached to the Thessalonians.
From here you can enjoy a beautiful view of the city as the monastery stands on top of a cliff about 120 meters high.