The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

You thought Santa Claus didn't exist, but it turns out you were wrong.

This unassuming home was once “grand central station” for the Underground Railroad.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A small wall and marker are all that remain of this historic canal tunnel.

The oldest brick house in the state of Ohio.

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

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

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This massive airship factory is so large that it has its own indoor weather.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

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

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.

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

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.

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

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

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