An enormous public square and parade ground built to celebrate Ghana's independence.

Where thousands of slaves passed through the "Door of No Return."

A comprehensive museum dedicated to Africa's oldest modern republic.

The oldest of its kind in the country, this tree sits where formerly enslaved people are said to have founded the city of Freetown.

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

Thousands of colorful pirogues showcase ingenious craftsmanship at the largest fishermen port in Nouakchott.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

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

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

Over 4,700 miles of trees being planted to hold back the desert.

This is the oldest Roman-made bridge in the city still existing in its original state.

Ancient ruins hidden underneath a modern luxury hotel.

This futuristic building is yet another architectural wonder in Dubai.

The world's largest frame offers spectacular views of the city's past and present.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This indoor ski resort has a mountain contained inside a mall.

This artificial archipelago was supposed to resemble a map of the world.

This bazaar is one of the oldest in the Arabian world.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.