Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Elevated freight railway turned wildly successful urban park.

One of only two commuter aerial tramways in the United States.

Sniff the Titan Arum's rotting flesh.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

A naturally beautiful, seemingly bottomless deep blue spring.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

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

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

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

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.

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.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.