Damanhur is a massive, elaborately system of underground temples near Turin Italy. They were built in 1975 by a new age guru, Oberto Airaudi, and his followers. Airaudi passed away, and today about 600 members still live in the community around the temples. The temples are appointed with cartoonishly elaborate murals and I would love to visit them, but if this website is to be believed, Damanhur is a typically creepy cult.