I know the OP said other than National Parks, but I would like to add a few ideas that include some National Parks and museums: Gettysburg, Minuteman Missile museum and related sites, Mt. Rushmore and related sites (the Needles Highway, Peter Norbeck Scenic Byway, and Iron Mountain Road), Custer State Park, the Grand Canyon, Sedona, Oak Creek Canyon (on a motorcycle), Fair Oaks Farms in Fair Oaks Indiana, Indiananpolis Speedway/museum, any NASCAR race, Boston and all the related sites (Freedom Trail, Old Ironsides, Fenway, Faneuil Hall, etc.), Washington DC and all you can take in there, and in the home state: Acadia NP (hiking), Mt. Katahdin (hiking). The rest are still on my bucket list!