Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

A massive underwater sinkhole made famous by Jacques Cousteau.

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.

Traditional 11th-century outdoor tannery.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

A fortified city, home to a remaining population of five families

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

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Kenya’s oldest town is more than 700 years old and home to 6,000 donkeys.

This colonial fort is an intriguing example of Renaissance military architecture.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

The original goat tower, the one that started it all.

Home to some of the oldest hominid fossils ever found.

This road winds through the steep coastal cliffside offering spectacular views for those who brave the drive.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

Caves that can't seem to quit producing the remains of prehistoric humans.

A sobering account of the vibrant multicultural neighborhood that was destroyed under apartheid.

Largest cave system in Africa.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.