Located in Yenicuma, this mosque is dedicated to St.Eugenios, once thought to be the guarding saint of Trabzon. The first structure is said to be a basilica that dates back to the 13th century.

       Having no narthex, the structure has three apses and naves. The central dome is fixed on two cruciform legs in the east and a doric column in the west. On the apses are depictions of pigeons and eagles embossed.

       After the conquest of Trabzon, it was converted into a mosque. A northern entrance and a minaret was built together with another entrance through the great entrance. The stone altar niche is baroque in style and the wooden pulpit is plain.

       On the floor are mosaic ornaments and frescoes inside the walls. In the inner walls are invaluable ornamentations.