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

Ohio's 19th-century communist micro-society.

This moving cemetery sphere is a slowly rolling stone.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

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

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

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Faces carved into the cliffs create an otherworldly walking trail.

A gregarious Ohio resident has been building his whimsical temple to peace for decades.

It took more than 20 years and a sharp eye for one man to assemble this quirky collection.

A grandiose title could not save this mercantile community from obscurity.

The spectacular collection of one of the world's best woodcarvers.

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

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

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

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

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

A retro walk through the history of the tube.

The only presidential monument to display a late POTUS's actual casket.

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

The largest ancient burial mound in Ohio.

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.

There are more than 4 million bricks inside this unofficial Lego museum in a former middle school.