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.
Stolzenfels Castle
Stolzenfels Castle () is a former medieval fortress castle ("Burg") turned into a palace, near Koblenz on the left bank of the Rhine, in the state of Rhineland-Palatinate, Germany. Stolzenfels was a ruined 13th-century castle, gifted to the Prussian Crownprince, Frederick William in 1823. He had it rebuilt as a 19th-century palace in Gothic Revival style. Today, it is part of the UNESCO World Heritage Site Upper Middle Rhine Valley.