Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

This giant volcanic crater holds its very own field of salt.

Village of slate houses, built on a white marble outcrop.

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Ming Dynasty necropolis raided during the Cultural Revolution.

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

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

Where the Great Wall of China meets the sea.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A massive collection of petroglyphs dating back some 40,000 years.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

A unique museum dedicated to culture and artistry of carpet weaving.

A quirky house created entirely out of glass bottles combines a collector's spirit with an artist's flair.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

Cathedral carved out of salt, located a mile below the Earth's surface.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A park with one large cat sculpture and 15 smaller ones, all painted by different Colombian artists.

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.