Ruins of the Fröhlichsburg Castle, originally built in the 12th/13th century, with the remains of the walls and the large Fröhlichsturm tower. The Fröhlichsturm once belonged to a 12th-century castle in Mals, built by the Lords of Mals – hence its original name: Malsburg. The former residential building now only remains as a ruin. The tower is 33.5 meters high and also has a circumference of 33 meters. From the 14th century onwards, the castle served as the seat of justice for the Bishop of Chur. The name of the castle (and thus of the preserved tower) comes from the Lords of Fröhlich, into whose ownership it subsequently passed. According to legend, the stones of the castle were removed to expand the parish church in the 19th century. A series of small wall openings halfway up the tower still give an idea of the fact that a battlement once led around the keep.