The House of Hohenzollern is a prominent German royal family that originated in the 11th century. It played a significant role in European history, particularly in Prussia and Germany. The family produced several kings and emperors, including Frederick the Great and Wilhelm II, the last German emperor. The Hohenzollerns are known for their influence in politics, military, and culture. Their legacy includes the construction of impressive castles, such as the Hohenzollern Castle, which remains a popular tourist destination. The family's history reflects the evolution of Germany from a collection of states to a unified nation.