Zwartstoren

The Zwartstoren (lit. Black tower) was an old prison located near Grijzestad.

History
The prison was built from 1434-1439. The fact that it was made out of dark stone, and the grime on the walls consequently earned it the name "Zwartstoren". A number of people were imprisoned here, including founding father Fredrick van der Haas. In 1663 the prison was burnt down and destroyed by rebels during the Brunanter Civil War, since it symbolized the king's power.