Thornbury Castle, England: day trip to Glastonbury Tor and Town Thornbury Castle, England. Glastonbury Tor and Glastonbury Town, a day trip from Thornbury Castle. The town is particularly notable for the myths and legends concerning Joseph of Arimathea, the Holy Grail, and King Arthur. Copyleft music by Aminos. (You can view this video, and other travel videos in full-size and near-DVD quality, travel stills and more at www.jpmeyer.com). Thornbury Castle is part of the von Essen Group of hotels, "a private collection of individual country house hotels in the UK, each with a distinctive style and character of its own" according to www.vonessenhotels.co.uk, but we think of it as Real People having Real Fun!