Thessaloniki is home to some of the most important monuments of the Byzantine era, including many temples which have a great impact on visitors. One of the most important and most representative examples of church architecture of early Christian times and the Byzantine period is the church of Agios Dimitrios, dedicated to the memory of the city's patron saint. The foundations for a small chapel were laid here in 313, while its present form (a five apse basilica) was completed in 639.
The early Christian church of Panagia (Virgin Mary) Acheiropoietos, located on Agias Sophias Street was built in the middle of the 5th century and underwent several restorations in the 7th century. The most important reconstruction works were carried out during the Byzantine period (14th-15th century). This is one of the best preserved examples of a typical aisle basilica with wooden galleries from the Byzantine period.
One of the jewels of the Byzantine era is undoubtedly the church of Agia Sophia, which was dedicated to the wisdom of God and built in the 7th century.
Located at the junction of Agias Sophias Street and Ermou Street, it is a typical transitional domed cruciform and cloister. It bears an uncanny resemblance to the one in Constantinople (Istanbul).