Hohenzollern Castle is a castle approximately 50 kilometers (31 mi) south of Stuttgart, Germany. It is considered the ancestral seat of the Hohenzollern family, which emerged in the Middle Ages and eventually became German Emperors.
The castle is located on top of Berg (Mount) Hohenzollern, at an elevation of 855 meters (2,805 ft) above sea level; 234 m (768 ft) above the towns of Hechingen and nearby Bisingen, to the south. Both are located at the foothills of the Schwäbische Alb. The castle was first constructed in the early 11th century.
Among the historical artifacts of Prussian history contained in the castle are the Crown of Wilhelm II, some of the personal effects of King Frederick the Great and a letter from US President George Washington thanking Baron von Steuben for his service in the American Revolutionary War. The castle is today a popular tourist destination. Sources