The remains of a former logging boom town, crumbled away in the forest.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This charmingly homemade amusement park has been growing for 40 years.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

One of the ghostly stops along Route 66.

No matter what it might seem like on film, most scenes filmed on a plane are filmed at this LA studio.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

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.