This nearly abandoned "company town" is a ghost of Puerto Rico's once-lucrative sugar industry.

This ''hidden'' 19th-century bridge played a simple, yet important role during the Spanish-American War.

The ruins of the first Spanish settlement in Puerto Rico.

This small primate research island is teeming with playing, fighting wild monkeys.

A failed, un-built suburb that has been going feral for decades.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

The futuristic test model of an iconoclastic visionary who wanted to redesign the world.

When this test site was abandoned, they didn't even bother to take the rocket with them.

Recently celebrating its 25th anniversary, the garden opened in September 1997 to celebrate the men and women who have had the greatest impact on Key West.

A historic landmark and museum filled with curious objects representing the history of Key West.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

A historic presidential getaway on the continental United States' southernmost island.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Bat house that has only ever housed bat for one night; they all flew away and never came back.

The largest freshwater lake in the Florida Keys.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

After a long career, a disastrous sinking, and a half-successful salvage, this Naval vessel-turned-artificial reef ended up exactly where she was supposed to—with a little help from nature.

An underwater statue of Christ blesses the depths off Key Largo.

Stay in a room with a view... of the bottom of the ocean.

A resilient tree that has survived for more than 700 years in Guánica Dry Forest.

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

An essential stop before plundering, BYO Cutlass.