On June 23, 2008 I was working at the entrance to the Nevada City Open Air Museum in Nevada City, Montana. I am a tour guide with the Montana Heritage Commission and was taking tickets and giving information that day for the museum.
It was around 5:30 in the afternoon and I was sitting in the booth reading a book. It was pretty slow, not too many people had come through, which is typical late in the day. As I was reading, I heard someone coming toward me on the boardwalk, from inside the museum.
I put my book down to greet them when they came out. No one appeared, so I leaned over the booth to see if I could see who was there, and I didn't see anyone. I was curious, so I got up and checked the first three buildings in the museum. I found no one, so I went back to the booth a little bit mystified. Just as I began reading again, the footsteps returned, and walked right past me in front of the booth I was sitting in.
The footsteps started at the entrance/exit of the museum and stopped right at the step going up into the Music Hall. There was no body associated with these steps, just disembodied footsteps. I was a bit spooked, but not scared, since I'd heard from our curator that the same incident happened to him a few years back, but only he had been followed by the footsteps, I only experienced them walking past me at the entrance to the museum.