Quite fascinating place -- covers a great deal of ...

Quite fascinating place -- covers a great deal of Dayton, Ohio area history from the first pioneers to the age of aviation and the automobile. You can see log cabins, early frame homes, conastoga wagons, stage coaches, the Wright bicycle shop, the Wright B Flyer, train cars (Barney and Smith RR cars were built here), a Corliss engine, early automobiles, a huge collection of cash registers (some are amazing!) and early sports in Dayton (first football team in the NFL).
This is also a great place to visit if you come to Dayton to see the Air Force Museum or if you come for the amateur radio Hamvention.

In addition, there are outdoor carillon bell concerts, and small steam trains for the kids -- call ahead for scheduled events.

There is a great restaurant, gift shop and easy parking on site.
Much is outdoors, so dress warm in cold weather.
Allow at least four hours -- more if you take the Hawthorn Hill, Wright Brothers' house tour (1 1/2 hours, call ahead for reservations).
We loved the park.