The history of Venngarn manor dates to the 12th century. After several owners it was acquired by crown in 1555. Gustav II Adolphus donated Venngarn to Franz von Thurn Berendt and his son sold it to Magnus Gabriel De la Gardie in 1653. The late 17th century was a golden age for Venngarn castle. The present castle was built mainly in 1670 by the architect Jean de la Vallée.
As a chancellor and the leader in Charles XI's regency, De la Gardie was Sweden's most important politicians. Unfortunately for him, due the king's reduction De la Gardie had to return Venngarn later to the crown. Since 1686 the state of Sweden has leased Venngarn castle for several families and purposes. In 1916 a central government institution for alcoholism treatment was established at Venngarn. In 1997 it was sold to its current owners, Wenngarn AB.
There is also a notable chapel in the castle. When the crown took Venngarn 1686, the chapel was completely untouched. None have been added and only a few details have been lost since then. Thus, the chapel one of the country's best preserved church from the Age of Greatness. It was prepared by the De la Gardie, and presumably he also has hired Jean de la Vallee as an architect.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.