ExTRAINaganza Open House at the Great Falls Model Railroad Club - 144 Mill Street - Auburn, ME 04210. (Handicapped Accessible) - Hours 10a-4p each day. Suggested Donation: $5 per person. Our model railroads will be open for viewing during this event. Come and see our trains! Be a junior engineer on our HO Layout! For details, please visit https://www.greatfallsmodelrrclub.org