A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

This German fountain of a legendary apple wine-loving drink thief will spit on you.

Carved fountains poignantly placed in parks and in front of special monuments.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

Designed to commemorate the king's coronation.

Fantastic stainless steel dragon gates complete with mesh wings.

Tiny silver and copper fish set inside blue-green lights are like windows to the underwater world.

This monument commemorates NASA’s astronaut training in northern Iceland.

This ruined castle is said to be the legendary keep of a Viking princess.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Collection of still-functioning printing presses from the 18th to 20th centuries.

One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

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

An incredible natural formation along the Wild Atlantic Way.

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

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

The Dublin sea wall draws walkers, photographers, and fishing enthusiasts.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

A restaurant with an extensive Irish whiskey bar also has several first editions of famous works by Irish authors.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.