Roche Rock, Cornwall by SharpeImages.co.uk, via Flickr. Partly carved out of, and partly created of the surrounding rock it is thought to have been either a hermitage and/or occupied by a leper. It also features in the story of Tristan and Isolde in the King Arthur legends.
The 13th century ruins of Tintagel Castle, overlooking the ocean in Cornwall, England. Excavations demonstrated that this was a fortified home of the ruler of Cornwall in about 500AD. The largest fortified site of the ‘Arthurian’ period, it contained unprecedented remains of luxury goods from the Eastern Roman Empire. In 1998, a slate engraved with the name ‘Artognou’ and other names from the legends was discovered there.