What is the name of the castle from whence King Arthur according to legend ruled England?

Explanation

Camelot is the royal seat of the legendary King Arthur, where he lived with his wife Guinevere. Camelot has a special function in the legend, because it in many ways serves as a link between two different ages. According to the legend, King Arthur lived in the castle, which dates the castle to the 6th century AD. Many efforts have gone into identifying the site, but Camelot has not proven more historically verifiable than the rest of Arthurian legend.