This building used to be the main temple of the monastery and was dedicated to the Virgin Mary of the Augustans, "Santa Maria". Its main entrance is decorated with one of the most impressive doorframes of the city.
The little chapel on its west side was dedicated to the body of Christ. In 1657, the Turks turned the temple into a mosque named ‘Gazi Housein" or "Neratze", which also served as an Ottoman seminary.
In 1890, the mechanic G. Daskalakis added a large minaret with two stone-made balconies to the building.
Today the Mosque "Neratzes" is used as a conservatory.