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

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Things aren't quite what they seem at this mind-bending museum.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Theme park featuring miniature replicas of European monuments.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.

At 72 feet below sea level, it's the lowest commercial airport in the world.

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.

A sober museum housed in the original administrative building of one of Stalin's largest gulags.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

A collection of Lenin busts and other Soviet Era statues sit idly behind the Semipalatinsk Hotel.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

Avenue of trees planted by cosmonauts before their space departures.

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

An entertainment center in a huge transparent tent.

Nicknamed Kazakhstan's Grand Canyon, this natural wonder lies east of Almaty near the Chinese border.

One of the most horrible legacies of the Cold War is a site where the Soviet Union tested nuclear bombs on civilians.