A community of collapsing homes more than a mile out from the Florida coast.

A sculpture of a salmon swimming through a brick building.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This abandoned boat sits on a nude beach, is shaped like a UFO, and is covered in graffiti.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

A downtown park built on top of unclaimed graves.

A world-class observatory in the California desert.

The haunting ruins of Jack London's dream house.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

Largest collection of mounted dinosaur specimens in the world.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

A health museum containing a 27’’½-foot intestine.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

A psychological self-portrait in the form of a giant, segmented head.

A retired tobacco farmer's pet project turned into a sturdy miniature city.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

This whimsical stacked cabin looks like something out of a children's book.

The world's first time capsule lies behind a welded steel door in Atlanta.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”