Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A spherical "micro-nation" in the heart of Vienna.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

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

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Macabre astrological automaton clock dating to the late 1400s.

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

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

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

This spooky statue sits outside a famous Prague theater.

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.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

This Kansas City studio was home to Walt Disney's first animation business.

Community bookshelf of 25-foot-tall book spines.

This old-fashioned candy shop, ice cream parlor, and diner served as the setting for one of TV's most controversial series finales.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A pair of stones embedded in an Edinburgh street memorialize one of the city's last public hangings.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.