The only surviving prototype for Buckminster Fuller's house of the future.

The bones of an old zoo crumbling in the shadow of a new one.

Turnip-shaped island just off the Michigan shore in Lake Huron.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

This quiet island in the middle of a bustling city is actually a volcano dotted with Māori ruins.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

Built to be the ideal penitentiary, this abandoned panopticon saw several revolts and even a prisoners' coup.

This isolated island is often capped by its own fluffy cloud.

This deceptively beautiful island was once home to a German concentration camp and known as "Death Island."

These unusual houses look like giant boats that washed ashore on a residential street.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

A fantastical bed and breakfast with magically unique rooms.

The train that took the prime minister on his final journey now rests in a British museum.

The oldest structure in a beachside California city was built to serve eight students.

The notorious Wild West outlaw was raised in this unassuming abode.

Abandoned mini-mansions that were once intended for affluent Bangkok families now sit empty.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

One of the world's largest collections of medieval religious art.

You haven’t properly toured a winery until you’ve slept in an actual wine barrel.

Where the legendary Orson Welles got his theatrical start before "Citizen Kane."

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.