King Arthur's Hall is a megalithic enclosure on Bodmin Moor in Cornwall, England. It is thought to be a late Neolithic or early Bronze Age ceremonial site.
The monument consists of fifty-six stones arranged in a rectangle with a bank of earth around them and measures approximately 20m by 47m. The interior fills with water and a contemporary ground level has not been established. It has suffered damage by cattle in the past and is now protected by a gated fence. It can be reached by footpaths east of St Breward.
The surrounding area contains many stone circles, hut circles, cairns and cists.
In the absence of any archaeological finds, its origin and use is only speculative. A similar enclosure exists in Brittany which was a Bronze Age cremation site, but a similar rampart construction at Lough Gur in Ireland suggests an earlier Neolithic date. It has even been suggested that it was merely a medieval cattle pound, but the effort required to build the bank and to erect the slabs suggests that it had a more important function.
References:The Villa d'Este is a 16th-century villa in Tivoli, near Rome, famous for its terraced hillside Italian Renaissance garden and especially for its profusion of fountains: the extraordinary system contains fifty-one fountains and nymphaeums, 398 spouts, 364 water jets, 64 waterfalls, and 220 basins, fed by 875 meters of canals, channels and cascades, and all working entirely by the force of gravity, without pumps. It is now an Italian state museum, and is listed as a UNESCO world heritage site.
Tivoli had been a popular summer residence since ancient Roman times due to its altitude, cooler temperatures and its proximity to the Villa Hadriana, the summer residence of the Emperor Hadrian I.
The Villa was commissioned by Cardinal Ippolito II d'Este (1509-1572), second son of Alfonso I d'Este, the Duke of Ferrara and grandson of Pope Alexander VI, along with Lucrezia Borgia.