Nature

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

This reserve is the only place in the world where you can see the Barasingha swamp deer in the wild.

Woven tree art gives this towering Australian woodland a touch of mystical whimsy.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

Did Inca children also slide down these smooth rocky slopes above Cusco?

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Made from trees and then abandoned, this fence is still growing along a path in Germany.

A German town is growing a building out of trees.

Huge spherical rocks in the middle of the prairie.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.