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

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

These engineering masterpieces are a dominant feature of the Belfast skyline.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The patron saint of spinsters grasps a container of dried blood.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

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

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

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

Sloth rehabilitation center in the jungle of Costa Rica.

Seek out ‘The Devil’s Court’ in this concert venue located in a former monastery run by an order of Teutonic knights.

Strange rumors surround the artist who created these solemn metal guard dogs.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

A whimsical bridge adorned with decorative dragons.

This small chapel is built of human bones and decorated with a golden skeleton.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A Milanese café entirely designed by the American director Wes Anderson.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.