A meow-velous tribute to a beloved street cat, made famous on the internet.

A collection of modern and vintage pinball machines housed in the cellar of a 15th-century building.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Poland's oldest salt mine has nearly everything one needs to live underground forever.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

This extensive collection covers thousands of years of Polish military history.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

This hidden collection of everyday objects illustrates life within communist Poland.

The apartment building where JFK's assassin lived after defecting to the Soviet Union.

This Minsk museum has cat coffee, cat chess, cat art, and even a cat "staff," which visitors are free to take home.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This attraction was abandoned after the Chornobyl disaster.

This derelict superstructure was a very important warning system for the Soviet military.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

The London statue that imitates passersby.

This South London cemetery holds the remains of more than 15,000 people.

An incarceration museum on the spot of possibly the oldest prison in England.

This one has sailed five times as far as Sir Francis Drake's famous ship.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The curios of pharmacist and collector Henry Wellcome.