Hald Castle was built in 1528 by the bishop Jørgen Friis, who was the last Roman Catholic bishop of Viborg. It is said that Friis was one of the first prisons in Hald tower after the Reformation. The castle was left to decay and in the 1700s it was abandoned. Anyway in late 1800s the owned Christopher Krabbe reconstructed the tower which is today the most visible part of the former castle. Today castle ruins are open to the public for free.References:
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.