Towering over the city 32-meter high tower is a remnant of Clay castle built by Casimir the Great around 1350. In 1657 the Swedes destroyed the castle, blowing him into the air. The rest only after the octagonal tower known as the "Mice Tower". At the top of the Tower there are 109 stairs. Initially, stairs lead outside, but at the height of the walls inside the tower has already run. On its walls can be seen 14 cannonballs. They were dug in the castle restaurant in podnórza tower. According to legend, the tower are large cellars. They are connected by an underground porch of parish church. However, out of the basement and the porch was walled up and placed in this place