The world's largest statue of Mao Zedong looks out over the city where he discovered Communism.

270 million year-old forest of stone.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The mirrored section takes the shape of Hebrew characters when viewed from above.

The monumental home of Prussia’s eccentric "Cannon King."

No need to strap in for a "ride" on this walkable roller coaster.

A lush oasis full of vibrant plants and striking geometric displays.

It houses the remains of a 17th-century version of the Titanic.

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

Comprised of thousands of cave temple carvings this cornucopia of ancient Chinese stone art is unrivaled anywhere in the world.

9,000 years of carnal history is on display at China's original Museum of Sex.

A prestigious learning institute of old Shanghai.

An out-of-place slice of France, smack in the middle of Shanghai.

An collection of Chinese propaganda posters from 1949 to 1979.

One of the largest, grandest imperial mausoleums was built as the founder of the Ming Dynasty's final resting place.

With former lives as a bomb shelter and government parking lot, this shop is one of China’s most extraordinary locales for book-lovers.

Once an imperial lake garden, anyone can now visit this city park.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

A small island dotted with old, historic Finnish buildings.

The hallucinogenic center of the ancient world.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

A monument on the pavement marks the spot where two cultures that shaped Sarajevo come together.