Nature

Abandoned rock quarry now a haven for mountain bikers and hikers.

Vast stretch of tide-pools with a unique Moroccan charm.

Singing sand that stands as the final remains of an ancient lake.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Friction between grains of sand cause a curious "singing" sound.

Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

God's Saharan sandbox of wrath.

Queen of the waterlilies, so big and strong it can support the weight of a human.

Named for the DeFoe novel inspired by a stranded sailor, this island is known for its rare plants and extreme beauty.

Perfect your fly fishing technique on their practice ponds.

Cliffs that hold fossils, including the earliest known reptile, dating back more than 300 million years.

Raised illegally, Reggie now lives at the Los Angeles Zoo after authorities spent years tracking him down.

White llama terraces dazzle in Peru's "other Machu Picchu."

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Eastern Canada's ocean playground.

Known as the wettest place on earth.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.