A self-taught astronomer fell in love with the stars and built his own observatory in Colombia.

An explosion of natural color known as "the river that ran away from paradise."

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

An archeological treasure trove stumbled upon by a couple of children.

This enchanting hamlet carved into the rock looks like something straight out of Tolkien's Rivendell.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

Translating as "The Jump of the Girlfriend," this stunning waterfall has a tragic legend behind it.

Rare karst landscape eroded from a flat seabed.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

Mosaics, storks, and brothels—this ancient city has it all.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

One of the most spectacular canyons in the world.

One of the few places to grab a beer in Fez is a former British consulate.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

Founded as a refugee camp, now a popular tourist spot.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

An ancient Egyptian temple in the middle of Madrid, Spain.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Three bridges and one giant canyon make up this fantastic Spanish settlement.