My nephew had an unfortunate accident with his new Martin Guitar, so we decided to take a drive to the factory in Nazareth, PA and drop it off for repair. While we were there, we walked through the museum and went through the factory tour. If you happen to visit Pennsylvania, I highly recommend visiting the Martin Guitar factory.
You are allowed to take pictures and video inside the lobby and museum, but no video or flash photography is permitted inside the factory, although non flash photography is permitted.
Here's a few pictures from my visit.