This simple apartment may have inspired some of the most important theories in the history of science.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

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

France's most famous cemetery, with some of its most curious tombs.

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Yo, Adrian!

World's first "penitentiary," meant to be humane, drove men insane.

A layered tribute to the work of mosaicist Isaiah Zagar.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The bears of Bern have been a city highlight for over 500 years.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Metro station with a claim to rock n' roll fame.

The "Prussian Versailles" that is as glorious today as when it was built.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."