Human-made caves excavated to hide a secret society of wealthy pagans.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

Asthmatic Charles Hyett's son built a fantastical garden for his father to convalesce in, alas it was too late.

The decaying ruins of Wales' first asylum for the mentally ill.

One family's environment-friendly hobbit-house in Wales.

The world's smallest movie theater runs on solar power—an attraction in itself.