Opposite Bremm on a peninsula is the former Stuben Monastery with its impressive church ruins. The complex was founded at the beginning of the 12th century by the Augustinian nuns of the Springiersbach Abbey.
Today, only the outer walls remain, except for the west wall. The monastery is mainly used for open-air events in summer. The view of the ruins from Calmont is particularly impressive.
The first written record of church in Danmark locality date back to the year 1291. Close to the church are several stones with a Christian text and cross inscribed. The oldest parts of the present red-brick church are from the 1300s. In the late 1400s the church was enlarged to the appearance it has today. The church has been modified both internally and externally several times, among other things after the fires in 1699 and 1889. There are lot of well-preserved mural paintings in the walls.