Over two-thirds of the world's population of giant tortoises live among this coral formation.

The hottest place on the planet.

The Earth's saltiest natural body of water belches toxic gas.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

Deep below the dry landscape of Bahia, a cave with intense blue water to float in.

You can swim in these highly salty, mesmerizingly blue lakes in the Atacama Desert.

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

An otherworldly, fossil-rich cobble beach holds Viking graves, cairns, and other remains.

Dinosaur eggs were first discovered at these fiery red cliffs.

These strange piles of magnetized volcanic ash travel across the desert about 50 feet per year.

Human ancestor’s 3.6 million year-old footprints.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

This pair of Australian "waterfalls" appear to be falling straight across the land.

This museum is known as the "Land of the Dinosaurs," but its full-scale dino models are just the start.

Largest collection of mounted dinosaur specimens in the world.

These tracks are believed to be from a panicked dinosaur stampede.

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

Surrounded by a smudge of dark earth, this isolated volcano sits in stark contrast to the surrounding Sahara.

One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert.

A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.