Remains of a Gothic castle founded by Přemysl Otakar II in the second half of the 16th century. During the Hussite era connected with the town by common fortifications. The castle was damaged in the 16th century, partly rebuilt into a brewery in the 17th century, other parts gradually destroyed by new reconstructions. The tower is the oldest battery tower in our country with a bay, through which canons were lifted to the tower. Exposition: the Life and work of medieval society (archaeological finds, reconstruction of objects, models of buildings etc.)