The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A haunting collection of the vanished and disappearing natural world.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

At the center of an island in the middle of the Indian Ocean is a deep chasm ringed by tall waterfalls.

This monument sits at the foot of a mountain from which legend says enslaved people jumped to their deaths.

This small group of sand dunes manages to pack in a strange rainbow of colors.