Hohenzollern Castle
With over 350,000 visitors per year Hohenzollern castle is one of the most visited castles in Germany. The castle is privately owned by the House of Hohenzollern, with two-thirds belonging to the Brandenburg-Prussian branch, and the balance to the Swabian branch. Since 1952, the Princess Kira of Prussia Foundation has used the castle for an annual summer camp for children. Whenever Prince George and his family are staying at the castle, the Prussian flag flies over the castle.
Lichtenstein Castle (Greifenstein)
Lichtenstein Castle () is a levelled spur castle on the hill of Burgberg Lichtenstein, , near the Greifenstein village of Holzhausen on the old military High Road, that ran from Frankfurt via Wetzlar to Cologne. The castle site is situated to the north of, and above, the Ulmbach Reservoir in the Hessian county of Lahn-Dill-Kreis.