Morocco's Argania trees are infested with nut-hungry goats.

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

This fortified sand barrier dividing a contested territory is the longest minefield in the world.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

Ancient Manuscripts showcase the civilization of West Africans during the Middle Ages.

Iconic red and white plaques show the creative names invented to navigate the city streets.

The masses at this church incorporate enough moonshine and animal sacrifice that they are no longer recognizably Catholic.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

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

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

A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

The stoutest tree in the world.

This beautifully deceptive waterfall is something far different from what it appears to be.

A flooded Mexican cave that hides a river beneath the water.

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

This singular broken monument, now housed in a museum, was the cause of a worldwide "Mayan Doomsday" phenomenon.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.

Banksy's image of a naked man dangling from the window of a sex health clinic.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.