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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Baroque celebration of the end of the Great Plague of Vienna.

This no man's land slicing through the island is strewn with abandoned relics of another time.

Solitary monument dedicated to the beauty of nature.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Hot Doug's "Hot Dog" Stand.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

Home to a protest movement, a bombing, and a dramatic change in labor history.

The beloved home to all publications indie, erotic, and punky.

A Bibliophile's Dream.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The curios of pharmacist and collector Henry Wellcome.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

A cluttered and astounding collection of antiquities and curiosities.

Rebuilt remains of a temple to Roman god Mithras.

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

Thousands of well-dressed mummies below a monastery.

No one knows who built this strange cave of worship or exactly why.