An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

66,000 pieces of art, donated by one of the world's richest men.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

These azure waters were thought to lead to the Mayan Underworld.

A gargantuan crystal kingdom.

An Aztec snake god has taken the material form of an apartment complex.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Beijing's expansive subterranean hiding spot now crumbles away as a tourist destination.

A studio devoted to keeping hundreds of unique Chinese arts alive.

This sensational Chinese temple walks visitors through the 76 weird departments of the afterlife.

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

This ancient Chinese observatory still contains early astronomy technology.

Ming Dynasty necropolis raided during the Cultural Revolution.

Beijing's World Park offers the excitement of international sites without the travel.

This probably wasn't what Mao had in mind.

This Chinese museum proves that it's a watermelon world, we're all just living in it.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

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