Historically speaking, the most significant part of Worcester Cathedral is its crypt, a classic example of Norman architecture that dates from 1084. It contains the tombs of King John, whose claim to fame is the Magna Carta, and Prince Arthur, the elder brother of Henry VIII. Both tombs can be found near the high altar. The 12th-century chapter house is one of the finest in England and, along with the cloisters, evokes the cathedral's rich monastic past. The cathedral is also known for a distinguished history of fine choral music, and, rotating with the cathedrals of Gloucester and Hereford, hosts the oldest choral festival in Europe, the Three Choirs Festival.