This former luxury resort in Kaua'i is now an abandoned relic.

Submerged lava formations create incredible waterworks.

This abandoned motel doesn't welcome guests anymore, but decay and a creepy atmosphere still call it home.

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

Canyon walls shrouded in ferns.

Experience the "opulence, grace, and grandeur of Eureka's most famous Victorian Inn."

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

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

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

The mysterious round rocks of Schooner Gulch.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

San Francisco Bay's ghost town.