The Church of Saint Dimitrios is a prominent Orthodox church located in Thessaloniki, Greece. It is dedicated to Saint Dimitrios, the patron saint of the city, and is known for its rich history and stunning Byzantine architecture. The church was built in the 7th century on the site of an earlier Roman structure, believed to be where Saint Dimitrios was martyred. The church features beautiful mosaics and intricate frescoes that showcase the artistic style of the Byzantine era. It has been recognized as a UNESCO World Heritage Site, highlighting its cultural and historical significance. Visitors often come to admire its spiritual atmosphere and historical artifacts.