Burg Bischofstein

Bischofstein Castle (German: Burg Bischofstein) is a castle on the Moselle in Germany. The castle sits between Moselkern and Hatzenport and across from the borough of Burgen. It was a stronghold belonging to the Archbishops of Treves. A characteristic attribute of the castle are its tall cylindrical donjon tower girt round with a white plaster streak about halfway up and the ruined chapel adjoining it.

• http://en.wikipedia.org/wiki/Bischofstein Castle (Germany)