Centre Charlemagne is the new museum of Aachen local history. It occupies the site on the Katschhof, the former palace courtyard. It focuses on a history of Aachen from the Neolithic to the present day. The key periods are the ancient Roman age (until 4th century AD), Charlemagne's Aachen (the capital of Frankish Empire), the medieval period and Baroque period. The whole house is barrier-free.
Built around AD 90 to entertain the legionaries stationed at the fort of Caerleon (Isca), the impressive amphitheatre was the Roman equivalent of today’s multiplex cinema. Wooden benches provided seating for up to 6,000 spectators, who would gather to watch bloodthirsty displays featuring gladiatorial combat and exotic wild animals.
Long after the Romans left, the amphitheatre took on a new life in Arthurian legend. Geoffrey of Monmouth, the somewhat imaginative 12th-century scholar, wrote in his History of the Kings of Britain that Arthur was crowned in Caerleon and that the ruined amphitheatre was actually the remains of King Arthur’s Round Table.
Today it is the most complete Roman amphitheatre in Britain.