Montshire Museum of Science, Norwich, Vt.
Mark Wilson/Globe Staff
Children building forts is a time-honored tradition. With its annual Igloo Build (Feb. 13), the Montshire teaches youngsters how to construct the ultimate cold-weather shelter, then lets them make their own, block by block. The workshop is an extension of the museums philosophy, which emphasizes the process of discovery through hands-on experiences. Parents have a hard time dragging their kids out of their igloos, said Bert Yankielun, who has directed the Igloo Build for over 20 years. The only thing that gets them out is that some kids find it even more fun to destroy the igloos when theyre finished. He recommends the Igloo Build for kids 5 to 150 years old. Outside are plenty of nature trails to explore. Inside, more than 60 science-related exhibits await, covering such topics as weather, astronomy, light and vision, motion, and environment. 1 Montshire Road, 802-649-2200, montshire.org, daily 10 a.m.-5 p.m., adults $10, ages 2-17 $8, under 2 free, Igloo Build free with museum admission.