Entrance to Hohenzollern Castle, the ancestral seat of the imperial House of Hohenzollern.

The third of three castles on the site, it is located atop Berg Hohenzollern, a 234-metre (768 ft) bluff rising above the towns of Hechingen and Bisingen in the foothills of the Swabian Jura of central Baden-Württemberg, Germany.

The castle was built between 1846 and 1867 as a family memorial by Hohenzollern scion King Frederick William IV of Prussia. Architect Friedrich August Stüler based his design on English Gothic Revival architecture and the Châteaux of the Loire Valley. No member of the Hohenzollern family was in permanent or regular residence when it was completed, and none of the three Deutsche Kaiser of the late 19th and early 20th century German Empire ever occupied the castle; in 1945 it briefly became the home of the former Crown Prince Wilhelm of Germany, son of the last Hohenzollern monarch, Kaiser Wilhelm II.