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

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

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Because sometimes the most efficient route from A to B isn't a straight line.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

Europe’s oldest natural human mummy.

Once America's longest-manned military fort, now an abandoned hulk.

World's first "penitentiary," meant to be humane, drove men insane.