A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

A moody and picturesque riverside ruin overgrown with vegetation.

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

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

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

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

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

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

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.

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

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

As lake waters recede, a German village reemerges after more than a hundred years.

The first (but not only) upside-down house in Germany.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

Enter the cabin of a life-sized Hindenburg replica.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

This German bone house contains the remains of some 20,000 souls.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

This painted Lego bridge is the product of over a century of locomotive history.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

These 18th century gardens tell a rocky story of the son of Odysseus.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.