Probably the best-known landmark in Braunschweig is the Braunschweig Castle Lion, which was also called Löwenstein until the end of the 19th century. The monument from the 12th century shows a larger-than-life bronze lion that the Duke of Brunswick, Henry the Lion, had sculpted as a sign of his power and jurisdiction. While the original can be seen inside Dankwarderode Castle, a replica of the well-known Romanesque bronze can be found on the castle square in front of the castle or Brunswick Cathedral. Here, the castle lion forms the centre of the historic Burgplatz, which the Guelph Duke Henry the Lion developed as the centre of his power in the 12th century.