Hagios Demetrios, Paleochristian basilica in Thessaloniki, Greece
Hagios Demetrios is a Paleochristian basilica in Thessaloniki featuring five aisles separated by marble columns with ornate capitals. The interior walls display mosaics spanning from the 5th to 9th centuries, showing how artistic styles evolved through different periods.
The first structure at this site was built in 313 CE at the location where Saint Demetrius suffered martyrdom. A larger three-aisled basilica followed in the 5th century, which was later expanded and underwent restoration throughout subsequent centuries.
The crypt below the altar preserves the site of ancient Roman baths where Saint Demetrius was held captive. Pilgrims visit to honor this sacred location, which remains central to Orthodox Christian devotion and worship.
The church is open daily for visitors and provides access to the main sanctuary, crypt, and a museum containing religious objects. Early morning or late afternoon visits tend to be less crowded, making it easier to explore the space.
Silver reliquaries in the northern aisle hold the skull and remains of Saint Demetrius, which were returned to Thessaloniki in 1978 after centuries in other locations. This return of the saint's remains was a significant event for the city and the faithful community.
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