The Altes Schloss or old castle, originally – since the 13th century – the heart of an extended hunting ground, surrounded by moats and equipped with numerous ancillary buildings, today forms an important visual motif in the gardens. It became a Habsburg possession in 1333 and was extended in the 17th century by Lodovico Burnacini.
After an attack by the Turks in 1683, this building was reconstructed in 1693 and another floor was added. Until World War I, together with the Blauer Hof, built in the 18th century, the Altes Schloss served as a spring residence for the Habsburgs.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.