Kerin had a 5k run in the Napa, CA area, so we spent the weekend there. While driving through the nearby town, St. Helena, we ran across this radial engine museum. It looks like a guy runs a motorcycle shop and is an enthusiast about radial engines. They were all closed up at the time, but I saw a sign stating all engines (I saw, maybe, four of them) are in running condition. Neat. Here is a Pratt and Whitney R-4360.

A couple more. The one with the prop looks ready to start up on the stand.