The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

This grand mansion has starred in everything from Bones to Buffy.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

A castle that was built stone by stone by an eccentric journalist.

A strange house built only at night, with rumored mystic inspiration.

A grove of "candelabra redwoods" deep in California's Lost Coast.

This massive redwood tree has a hole in the base big enough to drive through.

An optical illusion found amid a logged redwood forest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Commonly referred to as the most photographed Victorian home in the United States.

Canyon walls shrouded in ferns.

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

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

Natural rock water slides hidden in the remote forests of northern Idaho.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

Stroll through a wonderland of stupendous moss-covered trees.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

Nuclear reactor created the plutonium used on Nagasaki.

Perhaps the world's only gas station inspired by a political scandal.