Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A clear blue swimming hole with hidden caves, still unexplored.

An ancient stone fortress considered by many to be the eighth wonder of the world.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

The hottest place on the planet.

One man's dream has turned into this naturally growing chapel made of almost nothing but trees.

This Sumatran root bridge took almost 30 years to knit itself together.

The most remote tree in the world survived desertification, but not a drunk truck driver.

A South African bar inside a hollowed out 6,000-year-old Baobab.

Human ancestor’s 3.6 million year-old footprints.

In Namibia there is an installation that explores the intertwined linguistics and existential beliefs of an imaginary community.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The remains of diamond fever taken over by the desert.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

The world's largest ship graveyard is the product of decades of corruption.

A geological bull's-eye visible from outer space.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

The culture that built these Tanzanian ruins displayed advanced knowledge of irrigation technology before mysteriously disappearing.