This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

This massive solar system model is sprawled out across Maine's suburban wilderness.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Art Deco urban decay at this historical building.

Rotting dome home spotted near Chapel Hill, North Carolina.

This woodland architectural installation acts as a camera obscura for the heavens.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

These grassy undulations on a stretch of University of Michigan campus aren't bad landscaping, they're art.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

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

An underwater city for the dead.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

The only runway directly into the magic kingdom has been closed since 1972, but it still sings to you if you drive fast enough.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

Notorious artist squat renovated into legal studios.

This log cabin gallery is one man's gnarly, hand-carved tribute to his favorite trees.

House built with over 60,000 glass bottles.