Thessaloniki - center of the cult of St. Demetrius, the patron saint of the city and and its magnificent temple-basilica built on the ruins of the baths, which in 303 was imprisoned, suffered and was buried flour martyr Demetrius. Marble wall coverings, mosaics, frescoes, stucco, capitals, etc. different eras - that the characteristic features of this unique monument, which was founded in 412-413 years. eparch Leontius, burned down in 1917 and was reopened after restoration in 1948.

Under the altar of the temple is a holy place where the saint died - is an ensemble consisting of odnopridelnoy Basilica, where he was buried Demetrius, and a separate space with a semicircular quadrangular columns, railings and columns, surrounded by water tanks. In the central tank has a marble arch with built-in sink in front of him, which was flowing myrrh.

Six small mosaics V and VII centuries, is not affected by fire, are in the altar area and the top of the west wall of the church. In the mosaics depicts St. Dimitri surrounded by children.