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

This magnificent Cincinnati graveyard is also a popular public park.

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

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

An art deco ice cream shop covered in vintage train station tiles.

One of Cincinnati's greatest fighters once trained at a now defunct gym in this Over-The-Rhine neighborhood.

The oldest brick house in the state of Ohio.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 was denounced by many—including Lincoln's own son.

Hidden on two floors of downtown building, the library has an incredible deal on rent.

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

The former broadcast site has been reimagined as a museum about the medium.

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

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.

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

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

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

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

Inside houses a vast collection of military aircraft and missiles spanning the ages.

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

This super steep hike ascends 2,000 feet in less than a mile.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This enigmatic building features numerous architectural styles.

There are eight natural springs around town, each with a slightly different taste.