The Bayrakli Mosque (Mosque of the Standard-bearer) is one of the few Ottoman mosques to survive in Larissa and the only one that has been reasonably well preserved. The building dates from the Ottoman period of Thessalian rule and was used as a mosque until 1881, when the region was annexed by Greece. After that it served various secular purposes — a fire station, a warehouse — before being classified as a protected monument.
The mosque is a compact domed structure typical of Macedonian Ottoman architecture. Its interior has been cleared and partially restored, and the building is now used occasionally for cultural events. It stands in the old quarter near Frourio Hill, close to the Ottoman baths and the remains of the Bedesten covered market. Together these form an unusual layer of Islamic heritage in this very Greek city — a reminder that Larissa spent four centuries as Yeni Şehir, the "New City" and capital of Ottoman Thessaly.