The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

San Francisco Bay's ghost town.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A surreal statue honoring Prague's favorite literary son.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This structure was moved nearly 40 feet while people continued working inside it.

It was dubbed the "Garden of Plates" because it's covered in pieces of discarded dishes.

This historic Mexican convent is home to a tree that grows crucifix-like thorns.

This eerily opulent residential museum is home to a haunting local legend.

The ruins of an ancient pyramid built by the mysterious Chupícuaro civilization.

A giant chess set, minus the psychedelic drug trip.