I really enjoyed visiting this museum a few years back, it's the Airforce Armament Museum, lot's of aircrafts and engines beside armament.
http://www.florida.flyer.co.uk/airforce.htm
And of course in Ottawa,canada we our own National Aviation museum which is being expended to move under shelter aircrafts stored outside.
http://www.aviation.nmstc.ca/eng/english_home.html