Church of the Acheiropoietos

The church of Panagia Chalkeon, often called "red church", is a Byzantine church built in the 11th century on an old pagan house of worship. Two events affected the church in the twentieth century: a fire in 1917 and an earthquake in 1932, which caused considerable damage and led to the restoration of the Panagia Chalkeon. It is now a UNESCO World Heritage Site as a Byzantine monument in Thessaloniki.

The Hagia Sophia Temple is a rare example of an iconoclastic church (726-787) combining the features of a cross-domed church and a basilica with three naves. Hagia Sophia was built at the turn of the 7th and 8th centuries on a 5th century church destroyed by an earthquake. Converted into a mosque by the Turks in 1523, it remained a place of Islamic worship until 1912 and the return of Thessaloniki into the Greek fold. In 1988, as a paleochristian and Byzantine monument, it was inscribed on the UNESCO World Heritage List.

The Basilica of St. Demetrius is a church founded on the site of the Roman baths in the 4th century. After earthquakes and fires in the 7th century, a new basilica was erected. During the Turkish reign, in 1493, it was transformed into a mosque "Kasımiye Camii", until the return of the city in Greece in 1912. During a fire in 1917, the building was badly damaged. The restoration works of the basilica began in the 30s and continued until 1948. In 1988, the basilica was inscribed on the list of World Heritage sites along with other "Paleochristian and Byzantine monuments of Thessaloniki" .