A vast array of tropical plants collected by a vacationing couple.

Florida castle built with aluminum printing plates.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

The crumbling remains of a 19th century fortess.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

The haunting remains of a failed housing development can still be found behind the big box stores that were to anchor them.

The so-called "world's shortest river" is actually a window into a cave.

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

Ruins of a Carnegie family mansion on Cumberland Island.

Jacksonville's highways rendered this century-old grammar school unusable.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

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

Gutted airplanes slowly decay in a Florida field.

It's a pretty creepy lock-up.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

The only Florida state park with publicly accessible caves.

This historic crypt was said to have been designed and built by the very person who is buried inside of it.

This curio museum seems like the type of place you might find a mogwai or a monkey's paw.

An 18th-century Spanish watchtower made entirely of seashell and concrete.