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

The central mosque of this Mali town is entirely built from mud.

This rusting artillery is a relic of Vichy France's influence in West Africa.

West Africa's largest fishing port honors its artisanal fishing process.

An island made out of shells, including a cemetery.

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

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This deceptively salty lake looks like blushing pink lemonade.

A tree seems to grow from the ocean floor on this strange strip of sand slowly being overtaken by the sea.

A 19th-century architectural masterpiece with ties to Gustave Eiffel.

An abandoned mountain village in Habib surrounded by walnut, apricot, and pomegranate trees.

If you dare visit this fort, fire-breathing hyenas might devour your camels.

Traditional architecture and ancient irrigation systems are on display in this gorgeous mountain village.

The ruins in this village were caused by something more sinister than neglect.

Nature's water park in the Wadi Bani Awf valley is full of pools flanked with cliffs and natural water slides.

This spectacular mosque houses the second-largest chandelier in the world.

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

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

Where artisans use centuries-old techniques to build traditional Arabian ships.

Some claim these desert ruins are from the legendary "Atlantis of the Sands."

These gnarly desert trees produce the prized aromatic resin traded along the ancient incense trail.

A city built from mud and known as the "Manhattan of the desert."

One of the largest mud-brick structures in the world.