TRAIN TIME 15: A Celebration of 40 Years of Model Railroading. Wenham Museum 132 Main Street. Wenham. Until Jan. 20, 2009. 10:00 a.m. to 4:00 p.m. Enter an enchanted world of 15 model train layouts of trains traversing tracks through tunnels, around buildings and across bridges. Your first stop is Harvest Time a G-gauge model train layout with clothes-pin ghosts and goblins hiding in the pumpkin patch. $7 adults, $6 seniors, $5 children aged 2-16. 978-468-2377, www.wenhammuseum.org.