I want to add some context after reading many comments and visiting for myself. First, all the major buildings now have weatherproof signs outside, some of them very interesting and detailed. It was not a bad walk for an elderly person (me) who walks city residential sidewalks 1 - 2 miles per day. The footpaths are pea gravel, not paved, so the trek was a little hard on the ankles and knees, but I managed just fine by going slowly and being extra careful. The restrooms are adjacent to the chapel, almost the fartherest distance from the entrance. It would be helpful to have additional directional signs. There is wheelchair access to the restrooms, doctor's house, and mansion that I noticed, but I think the paths are in need of end-of-winter maintanence. The hill up from the top of the parking lot to the bison pen is only about 50 steps, so it was easily manageable for me. I suspect a person using a wheelchair would need assistance getting up there. There were six animals or so, and one hay feeder in the pen. Some old tractor-drawn farm machines were adjacent to the pen: one hay rake, a harrow, and two, 2-row corn planters. From there one can see almost all of the 25 or so buildings scattered along the east side of the ridgeline. A lot of work has gone into it. I would have been happy seeing only that much. As we visited the individual buildings, my friend and I had many little conversations regarding differences between technology today and 150 years ago, more or less. It is only about 0.3 mile from the bison pen to the only ridgeline building, the mansion. Two large picnic tables are between them. Some people were enjoying themselves while flying kites on this windy day. I spent one hour walking one mile there, not on a first Saturday of the month, so no presentations and no entrance fee. I would imagine staying for three hours on a first Saturday of a month. We saw a large hawk hunting for prey near there. The museum was great as something different to do!