One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.

At 207 feet, one of the world's longest continuous escalators.

The skeletal white beams stand as a monument to religious dissent.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

Elvis's own personal tropical hideaway.

This replica of the Greek structure is in the heart of Nashville.

One of the oldest living oak trees in the Southeast.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

A 300-ship graveyard, with a few still visible at low tide.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A technicolor place of worship for Elevationists.

A museum dedicated to exhibiting remarkable outsider art.

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

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

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Treehouse motel and treehouse-building school.

The largest drain hole in the world.

A popular swimming hole that hides one of America's most deadly diving spots.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.