Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

Legend says this cave housed a 16th-century cannibal and his family of 48.

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

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

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

Just another ancient, mysterious Irish stone circle.

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Local legend says the remains of Father Christmas lie within the medieval grounds.

An ancient neolithic tomb that only sees the sun twice a year.

The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

A hugely vast Irish landscape of barren rock that stretches for miles.

Modern sundial uses ancient methods to tell time and date perfectly.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

The world's tallest box hedge is found in a delightful garden.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.