Aspen Center for Environmental Studies, Aspen

This family-friendly environmental center is an ideal sojourn for those who are outdoor-curious, but backcountry shy. Located in the Hallam Lake Nature Preserve, which is right in town, it is a perfect introduction to the great outdoors. A self-guided nature trail snakes around the preserve's 25 acres and is a favorite with bird-watchers. You can also check out its resident birds of prey, which include golden eagles and screech owls. The visitor center features an indoor trout stream swarming with native cutthroats, as well as an environmental library and a gift shop full of books, gifts and toys. For a true outdoor education, look for its weekly lecture series, which varies from season to season.