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.
Meßkirch Castle
Meßkirch Castle or Meßkirch Palace (also spelt "Messkirch", , "Schloss der Grafen von Zimmern" or "Zimmernschloss") is located in the town centre of Meßkirch in the county of Sigmaringen in the German state of Baden-Württemberg. The castle is a cultural and museum centre with castle tours, a county art gallery, a museum about philosopher Martin Heidegger, and the Oldtimer Museum with automobiles and motorcycles.