This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

This abandoned amusement park was built on a site with a dark history.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

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

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

An homage to everyone's favorite prehistoric cartoon family.

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

A memorial for an outsider theorist who believed that the planet is actually hollow.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

An abandoned asylum incorporated into a college campus.

The largest earthwork effigy in the world.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Imagine playing a version of Legends of the Hidden Temple, but with a distinctly Southern Gothic flare.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.