Took my uncle here who was visiting from out-of-town. A good variety of planes to view and a lot of information as well. I was a little taken back. There was a sign that said there was a "suggested donation" of $5. The clerk who was there advised us that it would be $10 for the two of us. I paid the $10--it's not that much money---but the attitude and demeanor of the clerk there was such that I will never return.