The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The loneliest island in New York.

The abandoned personal amusement park of the King of Pop.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Hundreds of trees made from glass bottles make up this forest on Route 66.

One man's homage to the sun continues to grow like a glass fractal.

A one-of-a-kind collection of a unique medium.

America's most famous piece of self-built architecture.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

World War II-era Nazi compound nestled in the Santa Monica hills.

"The Hoppiest Place in the World" holds the world’s largest collection of bunny memorabilia and is a singular testament of a couple's devotion to all things Leporidae.

This strangely vacant Western amusement seems to be an empty tribute to residents of Lucerne Valley.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

A fake town founded by Western movie stars is now becoming a hip desert community.