Just a short walk from the colonial-era fieldstone barn, a sea of green sprouts up around a small pond. Inside this self-sustained ecosystem, turtles leisurely perch on fallen tree limbs that float atop the cool water. Scenes like this are common at Great Valley Nature Center, which stretches 10.5 verdant acres across streams, ponds, wetlands, fields, and woodland habitats. The center fosters an awareness of the land through educational programs for all ages, including kayaking trips, geocaching adventures, or Owl Prowl dinner expeditions. Along with enjoying access to 500 partner museums and gardens throughout the world, members can tour a replica Native American Lenape village, or visit raptors on the mend at the Bird of Prey center. The center’s wildflower garden blooms yellow and white in the spring, and its maple-sugar house preserves the artisanal technique of boiling down flannel shirts from sweet-smelling lumberjacks.