45 minutes.
46 minutes to an hour.
You can spend as long as you like, if you read everything and watch the movie as Rick said 45 min visitor center. The hous must be a ranger led tour and is probally a 25 munute tour. You are invited to walk around on own to look at other displays in the house. Again if you take pictures and read everything add another 15 to 20 minutes
You'll probably spend 45 min with the tour guide. You can spend another 45 min or so watching the movie, looking at exhibits, etc. if you have the time.
Thanks! Your answer is awaiting moderation.