The magnificent, recently much expanded, USAF museum at Wright Patterson AFB, near Dayton, Ohio has an immaculate B-36. Not to mention a B-1, B-2, B-17, B-24, B-25,B-26, B-47,B-50,B-52, B-58 etc, etc....all under cover...Quite simply a jaw-dropping collection. Oh, and don't get me started on the XB-70! If you can only go to one museum, go there.