It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

This Gothic castle was inspired by Erik the Red's Viking residence at Brattahlid in Greenland.

This historic cliffside mansion uses a natural cave for air conditioning.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

An abandoned factory along the Mississippi coated by a giant mural.

Man-made geyser that rises to the exact height of the Gateway Arch.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Buy a token from the liquor store and you can make this beast spew flames on command.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The multinational Burger King chain is banned from operating within 20 miles of a family restaurant filed under the same name.

The 40-year-old machine serves soda quicker than you can catch it for a mere 75 cents a pop.

Both funky and traditional, it's the oldest of its kind in Indiana.

Nature and art meet in this curvy creation

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A miniature world of concrete and stone in Springfield, Ohio.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

Acres of English cottage gardens, unexpectedly nestled in a Cleveland suburb.

Faces carved into the cliffs create an otherworldly walking trail.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A natural gas leak provides a flickering flame beneath a waterfall.