Nassau/Suffolk border at Rtes. 25A & 108. Environmental education center and demonstration hatchery. Open daily year-round, 10 a.m.-5 p.m. Closed Thanksgiving, Christmas Day and Easter Sunday. Two buildings with tanks and aquariums, eight outdoor tanks. Largest collection of native freshwater fish, turtles and amphibians in the state. Fee. (516-692-6768)
After almost a hundred years as a trout hatchery, the Cold Spring Fish Hatchery and Aquarium now operates as a non-profit education center.