Where monkeys run wild and the humans are caged.

Former villa and estate of James Deering developed to preserve native tropical forests.

Eco-friendly island mansion.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

Launchpad for the US military’s dead mouse operation to battle millions of snakes.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Abandoned Air Force base that has fallen into disrepair.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.

Abandoned Coast Artillery fort now serves as graffiti canvas and sightseeing vantage point.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

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

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

Once America's longest-manned military fort, now an abandoned hulk.

An abandoned water sports stadium that has become a haven for graffiti and decay.

The bears may be gone, but their old cages can still be found.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

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

Once a popular hangout spot this huge mall was left to ruin after economic crash.