The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

European castle ruins in an American state park are actually the product of death and grief.

The second oldest continuously operating bar in Louisiana.

See massive fossils that are over 200 million years old in northeastern Arizona.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The magic's in the hole!

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

An acoustic anomaly with a mysterious cause.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The final resting place of New Orleans' most famous voodoo priestess.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.