A beautiful geyser under environmental threat.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One man's ambition created this psychedelic log home.

This museum glorifies the humble potato.

A museum dedicated to the history and art of staying clean.

Home to a timed geyser created by complete accident.

Home to the deepest rift anywhere on Earth.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

Back in the day everyone who was anyone played this historic western theater.

The smallest country in the world.

Historic home to one of the most famous women pioneers of the 19th century.

A breathtaking 19th-century trail overlooks Lake Tahoe.

Hidden in a hotel parking lot is a strange historical plaque erected by an obscure fraternal society.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.

California's oldest existing theater building hosted an impressive cast of celebrities, including hosting Mark Twain's first lecture.

A watering hole where the options for seating include a bar, patio, or subterranean cave.

"You don't need a rocket scientist to build a steam engine, but we've got one." -Museum docent on the credentials of a restoration volunteer.

A fine mixture of the old and the new topped with an art deco neon spire.

An abandoned lot littered with concrete debris was once the home of the world's first female railroad president.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

Dentist's hated concrete colossi are now beloved icons of the community.

This 19th century train workshop is a treasure trove of railroad history.