Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

What is it about mushrooms that makes people wish they lived inside of them?

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

The final resting place of the most famous sharpshooter.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The largest earthwork effigy in the world.

This one-room cabin where the young colonel slept during the French and Indian War.

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

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

Memorializing an American tragedy of massive proportions.

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

In this relatively flat state the highest point is an honored place.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

Where the oil industry began.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.