As I recall, there is one of these planes at the Kalamazoo Air Zoo (airplane museum). It is parked (suspended, actually) right nearby a World War Uno “red baron” open seater (you know, like Charlie Brown’s dog flies).
When we visited, the SR71 was just reachable above your head (you walk underneath it).
A real thrill seeing that plane (and the rest of the aircraft there).
Thank you. That was fun!
There is one at the outdoor museum off Fl 123 next to Eglin AFB.
It’s free and has a B52, F15 F16 F18 and much more.