This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

The largest source of fossilized insects anywhere.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

California's own majestic geyser is powered by a subterranean volcano.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

Colorful Native American paintings are hidden within this small cavern.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Towering basalt columns, a creation of fire and ice.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Most-visited and most-photographed slot canyon in the American Southwest.

An abandoned cyanide mill is now a haunting magnet for graffiti and illegal parties.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

An ill-fated attempt to grow wheat in the sagebrush steppe of northeastern Nevada.

A hidden slot canyon in the southern Nevada desert makes an unexpected oasis and scenic hike.

Decades' worth of lost and forgotten objects make up the collection of this tantalizingly odd little museum.

Thousands of acres of beautiful wild landscape in the Great Basin.

This dry lake bed contains the oldest known petroglyphs in North America.