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

This tiny cluster of abandoned buildings looks like the future of the ghost town - today!

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

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

Home of what was the largest hydraulic mine in the world, producing gold and the first diamonds in the U.S.

Graffiti-covered ruins that were once part of a farm owned by a mental hospital.

The haunting ruins of Jack London's dream house.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

This former boomtown "island" is now submerged below Folsom Lake.

The ruins of the castle that chemicals built.

A ruined hotel with an unlucky history and an eerie present.

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

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

The headquarters of a secretive order is also a beautifully-designed park.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The liveliest ghost town in the state.

Abandoned hotel with adjacent lake and golf course.

Abandoned Air Force base that has fallen into disrepair.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Remains of a Greek freighter trapped off of Rocky Point in 1961.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Abandoned anti-ballistic missile base.