A large early Christian Basilica (1st to early 4th century AD) and an important late Byzantine period (1204-1430) building were unearthed at a same number of Thessaloniki metro construction sites over the recent period.
Part of a three-aisled, 50-metre-long basilica was unearthed during earthworks for the construction of the Sintrivani station and according to archaeologists it belongs to a cemetery.
An important building with centuries-long but undetermined use was discovered during construction works for the Venizelos station. The building was used from the late Byzantine Period until the 18th century and comprised two underground spaces accessed through a hatch. A coin dated back to the time of late Byzantine Emperor Ioannis V Paleologus (1332-1391) found inside the building is indicative of the period during which it was constructed. Its use during the Ottoman period can be associated with nearby Ottoman monuments of Bezesten and Hamza Bei Tzami (Alkazar).