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.
Humboldt Box
The Humboldt Box was built as an information centre about plans for a future palace, a viewing platform for its construction site, and a temporary exhibition space for the future tenants. The idea came from a similar structure at Potsdamer Platz, the "Visitor Box on Stilts", which stood at the site of a large construction project there from 1995 to 2001. Hoping to repeat the success of the bright red "box on stilts", which served as an information centre and attracted some nine million visitors, the Friends of the Berlin City Palace and their supporters proposed the Humboldt Box to "win the hearts" of Berliners to the costly and ambitious plan to rebuild the "Stadtschloss" (Berlin City Palace). Used by Hohenzollern Prussian kings and German Emperors, the imperial palace suffered extensive damage in World War II and was razed in 1950 by the East German government.