A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

The world's second-largest sundial, made entirely out of stone.

The "Prussian Versailles" that is as glorious today as when it was built.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

An undulating wicker beast looms peacefully atop a sand dune in Belgium.

One of the world's largest Tesla coils.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

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

The palace of the King of Kings, burned by Alexander the Great.

An ancient Chinese temple where even the emperor dressed like a farmer in the name of the harvest.

Bouncing, delightful, mechanical art at the MIT Museum.

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Home to over 200,000 artifacts, this museum attempts to guide visitors through the ancient history of Beijing and Imperial China.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

Geometry and mystery come together in an epic show of octagonal masonry.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This massive library holds what was once the largest book collection in the world.

Hear the quietest sound from across the dome.

Every inch of this chapel is covered in craftsmanship from across the world.

Stained glass windows bathe this botanical garden in cosmic light.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.