Northern Kentucky’s very own Notre Dame showcases intricate stained glass and the bones of saints.

An abandoned relic of the city's failed experiment with below ground transit.

Historical structures and natural wonders await visitors to this preserve.

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

A memorial for an outsider theorist who believed that the planet is actually hollow.

The childhood home of the Wright Brothers in Dayton.

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

The largest ancient burial mound in Ohio.

A free park where visitors can learn about and collect 440 million-year-old fossils.

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

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

This 30,000 square-foot museum is home to an extensive collection of art and artifacts that reflect the history of southwest Ohio.

Built around 1845, this house was occupied for 100 years, serving as a home to a prosecuting attorney, a Union Civil War general, and a wealthy socialite.

The largest earthwork effigy in the world.

The childhood home of a Hollywood legend.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.

In the Mound Hill Cemetery resides the final resting place of the world's tallest couple.

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

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

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

An enormous factory from the late 1800s sits abandoned on Cleveland eastside.

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

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