I have been to many military museums and I was very impressed by the Air Force Armament Museum. It is a nice size, not to big, but large enough to provide many interesting displays. They have a large building with a few planes inside along with various static displays. Being the armament museum, there are many displays relating to the history of bomb and missile development. Of course the museum also looks at the history of Eglin Air Force Base. The outside of the museum has a great aircraft park. The highlights for me were the B-17 and B-25 from World War II, a special operations Pave Low helicopter, and an SR-71. This museum is free, but accepts donations. If you have a few hours to spend in Ft. Walton Beach, this is a nice place to visit.