This is the Celtic Roundhouse at the Cae Mabon Retreat Centre in Wales. It is set in natural woodland by a rushing river near a deep lake at the foot of high mountains. The roundhouse is one of several beautiful, natural, earthy structures used for people to meet and tell stories. You can see the collection of buildings at Cae Mabon on the Natural Homes Map here: www.naturalhomes.org/ecohousemap.htm?all@caemabon