Photo taken on Nov. 2, 2013 shows a part of the Burg Hohenzollern in Hechingen, Germany. Burg Hohenzollern is a castle considered to be the ancestral seat of the Hohenzollern family, which emerged in the Middle Ages and eventually became German Emperors. The castle was first constructed in the early 11th century and completely destroyed in 1423. The current version of the castle was rebuilt in mid-19th century. The castle becomes a popular tourist destination today as it is still privately owned by the descendants of the Hohenzollern family. (Xinhua/Gong Bing)