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

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

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

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Op-art architecture designed for happiness.

Rediscovered underground chapel is one of the best examples of Gothic architecture in Vienna.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

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

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A commercial fishing boat stranded on the California coast.

This mission, established in 1771, is the most remote of California’s Franciscan missions.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

Haunting and beautiful trees, doomed to die.

This remarkably simple jail went over a century without an escape.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

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