One of downtown Berlin's last reminders of its Communist past.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The embalmed remains of the communist leader lie within a custom crystal coffin.

Ming Dynasty necropolis raided during the Cultural Revolution.

This massive neon wheel is the only one of its kind to be built over a bridge.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

A beautiful but toxic fountain of mercury.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

These caves secretly held national treasures during World War II.

This building served as the first customs house in modern Greece.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A two thousand year old brothel uncovered in Northern Greece.

This ancient structure appears Roman, but was constructed during the 16th century and was utilized until 1911.

This tower is all that remains of the mosque that once stood in the center of the city, before it was destroyed by fire in 1941.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.