The Bristol Camera Obscura housed in an ancient windmill.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

Quirky Welsh observatory unites art and science.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

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

A 19th-century funicular railway shuttles visitors up this surprising sea cliff to one of the world's largest camera obscuras.

Three bridges straddle a stream, one stacked upon the other.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

The remains of centuries of copper mining appear like an alien landscape.

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

This abandoned asylum in Wales might look haunted, but it's still beautiful.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.