Teatown Lake Reservation is a nonprofit nature preserve and environmental education center in Westchester County, New York. The Reservation includes an 834-acre (3.38 km2) nature preserve and education center located in the Westchester Towns of Yorktown, Cortlandt, and New Castle. About 25,000 people come each year to hike the preserve s 15 miles (24 km) of trails, attend an education program, visit the Nature Center, or tour 'Wildflower Island'. Teatown s educators offer adult, family and children s programs to 10,000 participants annually, including nearly 6,000 schoolchildren and 700 summer camp students.