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

This psychedelic tourist trap is a leisurely descent into madness.

Stalactites and stalagmites in a beautifully lit cave.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A battle between nature and architecture in the Cambodian jungle.

Northern Ireland's Brobdingnagian stepping stones.

France's most famous cemetery, with some of its most curious tombs.

Macabre astrological automaton clock dating to the late 1400s.

Famously misunderstood wonder of the ancient world

An ancient capital city that dates back 3,000 years old and harbors many surprises.

The fairy tale castle of the "fairy-tale king."

This small group of sand dunes manages to pack in a strange rainbow of colors.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A tall karst islet popularized by 007.

God's Saharan sandbox of wrath.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.