A popular swimming hole that hides one of America's most deadly diving spots.

An emerald-green grotto just a short trip from Austin.

Just outside the Ohio Supreme Court sits a testament to justice.

Dozens of striking Indian symbols cover the second-floor hallways of this rural courthouse.

This bridge uses an inverted bowstring truss and is believed to be the only of its kind in the United States.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

But did the famous feminist and abolitionist ever really say those iconic four words?

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

A county library in rural Ohio houses one of the finest mineral collections in the world.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

The final resting place of the most famous sharpshooter.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

A real flying saucer, contracted by the U.S. Air Force.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.