Trains wind their way through a miniature western town decorated for the holidays. The annual model trains display has grown over the years to encompass the entire length of the barn.
The display is organized by Jim and Joanne Stapleton, who, along with the Model Train Society, have shared their trains with park visitors for 22 years.
The trains will be on display 11 a.m. to 4 p.m. Admission is free.
Colvin Run Mill is located at 10017 Colvin Run Rd. in Great Falls.