People have lived upon the site of Wawel Castle since the Paleolithic Age. The castle itself was first built in the 14th century, at the command of Polish monarch Casimir III the Great. The Gothic castle is home to the only preserved piece of the Polish Crown Jewels, the legendary sword Szczerbiec coronation sword. Decorated with symbols and floral patterns, the blade is notched to hold a small shield, giving the sword its nickname, the Jagged Sword.