A Trustees Family Level Membership good for one year. The Trustees is a land conservation organization dedicated to preserving, for public use and enjoyment, the places that make Massachusetts special. With a year-long Family Membership to The Trustees, you'll enjoy free or reduced admission to 120 spectacular properties around Massachusetts for 2 adults and children under the age of 18. You'll find everything, from beaches and waterfalls to woodlands and historic houses. You also receive a Property Guide that describes the various sites and a subscription to our quartely magazine, Special Places, which includes upcoming events.