The South African dialect's complex history is immortalized in stone, in one of the world's only monuments dedicated to a language.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

South Africa's postal service began with a letter left in a boot beneath this tree.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

Home to some of the oldest hominid fossils ever found.

Largest cave system in Africa.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

A 12th-century fortress containing some of Berlin's oldest buildings.

Head to the mountains to catch a glimpse of Spain's endangered subspecies of brown bear.

These ungulates have quite literally bounced back from the brink of extinction.

Two large posteriors in one giant statue.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

Medieval ruins nestled within a breathtaking swath of Spanish nature.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

This influential Renaissance-era library was once the haunt of kings and monks.

A cheese discovery made by shepherds became the pride of a region.

A house covered entirely with shells.

An unusual but excellent display created in the 1930s as propaganda against the Freemasons.

Living towers made of people that are now recognized by UNESCO.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."