Half of a house.

Enormous lake at the bottom of a unique cave system.

The world's tallest statue of an American hero.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

Elvis's own personal tropical hideaway.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Walk the whole Mississippi River!

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

The highest bridge in America was built for an almost unnervingly small amount of money.

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

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A display of magnificent stained glass windows is the first exhibit of its kind.

The palatial McDonald's that inspired Wesley Willis.

Illegal drag racing two stories beneath Chicago’s streets.

This hollowed salt dome is the largest oil storage facility in the world, hoarding 250 million barrels of crude oil.

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

Affectionately known as "Lord Bot," this historic statue has a cult social media following and rightly claims to be “the most metal inhabitant of the Wren Yard.”

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

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

Burial site more than 300 years old.

A maritime museum holding the remains of Blackbeard's pirate ship.