The House of Hohenzollern is a prominent German royal family that originated in the 11th century. It played a significant role in the history of Germany, particularly through its branches, the Prussian and Swabian lines. The family produced many influential leaders, including kings and emperors, and was instrumental in the unification of Germany in the 19th century. The family's ancestral seat is the Hohenzollern Castle, located in the Swabian Alps. This historic castle has been a symbol of the family's power and influence over the centuries. Today, it serves as a popular tourist destination, showcasing the rich history of the Hohenzollern lineage.