Crackstate is a residential manor palace built in 1648 by John Sytzes Crack. It is surrounded by a moat. Later it has been functioned as a prison and courthouse. During the World War II Crackstate was used for torturing and executing people. Today it is a city hall of Heerenveen.
References: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.