This place is packed, and a quite a gem of a Air Museum! I've been to bigger, but this is quality. Didn't know much about Mr. Hiller, but it turns out he was very accomplished in the development of helicopters. And they are all on display...along with engines and many other details. The museum has other notable aircraft as well, along with a Great tribute to the woman that pioneered early aviation. If you are on the Peninsula, this worth the visit. Perhaps a bit expensive at $16 entry fee...but worth the visit.