Cool museums. One that are off the beaten path.
The Cold War museum at Warrenton (Vint Hill), Virginia. Small, crowded and assembled in a WW2 radio shack original to the site. Donations accepted. Also a good winery on property.
The Veterans Memorial Museum in Branson, Missouri. Displays from WW1 thru Afghanistan. More museum than expected. Charge is $20, but helps keep the doors open.
Camp Blanding, Florida. At the front gate to the base, currently used by Fla national guard. Mostly a history of when it was a WW2 training base. With a few military aircraft on display.
Valiant Air Command in Titusville, Fla. An admittance fee, with volunteers that will give you a tour of the aircraft. Then self guided if you want.
South Dakota Air and Space museum in Rapid City. Just off base at Ellsworth AFB. Includes a tour of a decommissioned Minuteman silo on base. There’s also a minuteman museum east of Rapid City near Wall, SD that is part of the National Park Service.
Wall’s Drug Store, SD. Takes up more than a city block. A tourist trap, one of those “gotta stop” places on interstate 90. The interstate thru SD has a similar feel to it that the legendary Route 66 had.