Model trains created by the Redwood Empire Garden Railway Society. Build train tracks, listen to train music & stories. Take a ride on a mini train. Free with admission ($14, free for babies 0–11 months). Additional fees for concessions & Ride-On-Train. July 9 & 10. 10 a.m.–3 p.m. Children’s Museum of Sonoma County. 1835 W. Steele Ln., Santa Rosa. cmosc.org/train-days.