High Quality Content by WIKIPEDIA articles! Hohenzollern Castle (German: Burg Hohenzollern) is a castle, about 50 kilometers (30 mi) south of Stuttgart, Germany, considered home to the Hohenzollern family that came to power during the Middle Ages and ruled Prussia and Brandenburg until the end of World War I. The castle is located on top of Mount Hohenzollern at an elevation of 855 meters (2,805 ft), above Hechingen and nearby Bisingen, both located at the foothills of the Swabian Alb. It was originally constructed in the first part of the 11th century. It was completely destroyed after a 10- month siege in 1423 by the imperial cities of Swabia. A second, larger and sturdier castle was constructed from 1454 to 1461 and served as a refuge for the Swabian Hohenzollern family during wartime, including during the Thirty Years' War. By the end of the 18th century, however, the castle was thought to have lost its strategic importance and gradually fell into disrepair, leading to the demolition of several dilapidated buildings. Today, only the chapel remains from the medieval castle.