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

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

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

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

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

The once highest point in China blends symbolic design with a kick of adrenaline.

Natural arch offers panoramic views of Yangshuo's karst hills.

One of the largest underground systems runs under Canada's largest urban center.

Sofia's legislative center is continuously reinventing itself.

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

A striking symbol of the Bulgarian capital.

Op-art architecture designed for happiness.

The topiary maze at the Habsburg hunting lodge.

Bridge that died in war and was resurected.

The place where World War I began.

Oriental bazaar in the heart of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

An apparition of Virgin Mary in Herzegovina.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

A war-torn Olympic relic is being overtaken by graffiti and nature.