Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

A nesting ground for four of the world’s seven marine turtle species, most of which are endangered.

The largest camel market in West Africa

An intentionally grounded cargo ship remains half-buried in the sand.

The remains of the wrecked steam trawler can be found on the beach at low tide.

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

On a secluded beach is one of the few shipwrecks left on the shores of Mauritania.

The spectacular geological formations make it one of the most impressive caves in Europe.

This impressive chasm is one of the longest natural underground cavities in the world.

Besides being home to cave paintings and pre-Columbian Cuban archaeological remains, you get to take a boat through this stalactite and stalagmite covered cave.

Bioluminescence in the reefs of the Maldives causes the sea to glow like a starry night sky.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

These eerie outliers of the lightning bug family glow a mysterious blue color.

A glowing underwater cliff attracts marine life and divers in equal measure.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A no-frills, DIY nature preserve manned by a U.S. expat who has dedicated his life to turtle conservation.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This small uninhabited island offers Galapagos-like biodiversity.

The remains of an ancient settlement in one of the oldest archeological sites in South America.

It took 160 years to complete the most ornate church in Ecuador.

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

This research hub in the Amazon Rainforest is perched amid one of the world's most biologically diverse landscapes.

Massive volcano in the Andes is the farthest point from earth's center.