This is the best example of a Roman amphitheatre in Britain. Until 1926 when serious excavations were undertaken at the site, it was considered to be a circular earthwork and linked to the legend of King Arthur being known as his Round Table.
An early source of Caerleon having links with Arthur can be found in the 12th century writings of Geoffrey of Monmouth and his Historia Regum Britanniæ. The early traditions of Arthur had his capital in Caerleon, not Camelot.
The amphitheatre was built around 90AD and is close to the Roman Fort of Isca (base of operations for the 2nd Augustan Legion) and a Roman Bath House.