A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Little has changed in the way that this mill operates since the 18th-century.

Outsider art meets paleontology at this roadside reptile repository.

An eponymous directional signpost erected by the first president of the United States.

This historic mansion was built as a symbol of love between a husband and wife.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

A single handprint, which, according to Ohio State University legend, cannot be scrubbed off.

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

This small plaza encourages people diagnosed with cancer to never give up hope.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

An unassuming 13-acre park is home to over 12,000 roses.

A monument to a Native American leader who was known for never breaking a promise and met his end after signing a deal with white settlers.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

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

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

The childhood home of the Wright Brothers in Dayton.

A headstone tells the sad story of a lost little boy and his pet dog.

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.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

The National Park Service’s best-kept secret with views that rival any in D.C.