Hartman’s Historical Rock Garden in Springfield, Ohio is one of those roadside attractions you should see if you're in the neighborhood. It began as one man's hobby that over time grew into an amazing creation.
The art project dates from 1932, when Harry George Hartman lost his job during the Great Depression. The molder occupied his time with creating rock sculptures in his back yard, spanning all sorts of themes. Religion, historic buildings, recreations of famous battles and hundreds of thousands of stones.
You can see it, too -the admission is free. Or see lots of photographs at Random Good Stuff. Link