Mummified monks and the accidentally interred, in a 17th-century crypt.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

This strange statue depicts a young boy's body with an adult Mozart's head and a single wing.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

The final resting place of the last "gypsy king" of Poland.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

An abandoned underground bathroom is now a space for public art.

A preserved oak tree about 3,500 years old found in Riga, Latvia.

You'll find just about anything in this funky Tbilisi flea market.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The site of the first battle of World War II.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

BDSM, 1930s Style.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The most visited, and possibly most controversial, museum in Germany.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.