The Monk's Tower (Klasztorna) is located in the south-east corner of the wall, in the vicinity of the former Franciscan monastery, erected around the middle of the 19th century. fourteenth century and superstructure in 1562. The two lower storeys were founded on a rectangular plan, dim. 540 x 430 cm, the upper ones on a circular plan, with an outer diameter of 420 cm; the whole is topped with a low pyramidal helmet. Masonry walls made of ceramic bricks with monk bond (lower part). Currently, the tower is in ruins; the cylindrical part does not exist, and the four-sided part is fragmentary.