Little is known of the first royal residences at the Wawel until Casimir III the Great, who reigned from 1333 until 1370, had a Gothic castle erected next to the cathedral; this consisted of multiple structures situated around a central courtyard. In the 14th century, it was rebuilt by King Władysław II Jagiełło (also known as Jogaila) and Queen Jadwiga of Poland. The Hen's Foot Tower, built upon three projecting buttresses resembling a chicken foot, and the Danish Tower date from their reigns, as do the Jadwiga and Jogaila Chamber, in which the Polish coronation sword (Szczerbiec) is exhibited.