The stones of this formerly witch-obsessed castle were used to build a church.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

A magical place that lets you play in and explore the world of Studio Ghibli.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

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

A flooded Mexican cave that hides a river beneath the water.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

An emerald-green grotto just a short trip from Austin.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

One of the oldest living oak trees in the Southeast.

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Ruins of a 10th century church tucked away deep in a botanical garden.

It might not be as impossible to reach as its name would imply, but just about.

This picturesque ghost town is located on the banks of the Suwannee River.

A time capsule of Floridian history fights to survive on the banks of Chokoloskee Bay.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

North Central Florida's largest flea market and a weekend roadtripper's dream.

This kitsch eatery is chock-a-block with bric-a-brac.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

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