This abandoned horse racing track was an exercise in hubris from its inception.

Abandoned hotel with adjacent lake and golf course.

The former Naval shipyard is open for exploring - mostly.

Only gap in the 30,000-mile span of roads called the Pan-American Highway.

The liveliest ghost town in the state.

One of the ghostly stops along Route 66.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

The capitol city's oldest existing cemetery.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

This fortress in Honduras was built to resist pirates, but its builders had more to fear from the British.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

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

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

A self-built castle made by a mysterious man.

A reproduction of earth's many biomes.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

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

These cinderblock farmhouses were actually World War II radar stations in disguise.

The highest point in Nevada had to be decided by court order after California tried to claim it as their own.