Yes, I have visited many times. As Lew said, it is actually outside the Eglin gate (Lew, since US85 runs “east-west,” that gate is officially the West gate, right past the “West Gate Shoppette.” The old “TAC” then “ACC” gate has been renamed “Northwest” gate.) on the SOUTH side of the base towards Shalimar and Ft Walton Beach. Many aircraft are displayed outside, along with the two large bombs, including the MOAB–Massive Ordnance Airburst Bomb developed and tested there. The “gun room” has a great display of WWI, WWII and more modern guns. There are great displays identifying armament systems over the years. While it isn’t the biggest AF museum, it is very interesting, and it is free–donations appreciated.
At Hurlburt, west on 98, there are some aircraft on display associated with special operations over the years; however, it is harder to gain entrance for “non-cardholders.” Further west aboard Pensacola Naval Air Station is the National Naval Aviation Museum, well worth a visit, esp. during the times the Blue Angels are training at home base. The displays of aircraft are amazing, and the museum has some “interactive” features allowing access to cockpits, movies, etc.