One of Ireland's most infamous prisons for rebels including men, women and children.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

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

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

The ancient tomb acts as a calendar that keeps perfect time.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Britain's only artificial surfing lake is nestled in the beautiful mountains of Wales.

A Welsh sheep farm provides daily (non-sheep) meals to red kites, producing dazzling displays of aerial acrobatics.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

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

After years of slow decline, a derelict Gothic castle is now being restored to life.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

A real-life Professor Snape once taught in this Welsh university building, which students of course nicknamed “Hogwarts.”

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

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

A breathtaking flower tunnel bursts with beautiful golden blossoms.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

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

A subterranean playground in an abandoned slate mine.