This is quite a nice museum. The building is quite unassuming so you do not know what to expect. When we came in shortly after the museum opened, there was a docent that took us around and told us the history of aviation in general and specifically in the Bay area. I was quite impressed at the variety of displays and the signage is done well. I was with two other people and we quite enjoyed ourselves. We came on a Wednesday which happens to be a day that food trucks are in the parking lot. We had lunch and resumed our viewing in the museum. The museum can have a large number of kids that are brought to the museum via school buses. On the day we were there, the children left at lunch time so we pretty much had the museum to ourselves and a few others after lunch. The three of us sat in a 747 cockpit from one of the earlier models. We quite enjoyed studying every gauge, every switch, and every instrument in the cockpit. It took over an hour for the three of us to become satisfied that we had an excellent understanding of what was going on with regard to all of the controls of the pilots and the flight engineer. If you are into aviation, I think it's easy to spend four or five hours here. If you are not a real aviation fan, then I would say an hour or two might be enough. Another thing that's going on with Hillary aviation is that on the weekends they have quite a number of activities that are oriented around youth. I have a really good feeling that this museum understands how it can contribute to the community. I give high marks to the management team of the museum.