Mashomack Preserve, 47 S Fouth Ferry Road, Shelter Island, NY 11964, United States (map)

Hiking, muddling in a marsh, a canoe trip, and nature art are all part of Mashomack's popular summer program. Increasing awareness of the natural world while having fun is the goal of this weeklong program. Held 9 AM to noon. For children entering grades 3 – 7 in the fall. Reservations taken starting June 1. Fee is $135.