Bailey Arboretum is a 42-acre (17 ha) arboretum located in Lattingtown, New York, a small village on the North Shore of Long Island.[1] It opened to the public on Aug. 5, 1969 after being donated to Nassau County in 1968 by the heirs of Mr. and Mrs. Frank Bailey.[2] Through an agreement with the Village of Lattingtown, admission to the arboretum was limited to 200 people at any one time.[3]