One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A subterranean playground in an abandoned slate mine.

A historic Georgian building and warm springs.

Some of England's last cave dwellers lived and worked within this huge cave.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

This haunting stone chasm is a hotbed of mossy rock and English legend.