Telescope Hill, at 334 feet (102 m), is the highest point of elevation in the Town of Brookhaven, on Long Island, New York, United States. The hill is located at the end of Tower Hill Ave., on the border of the ZIP codes of the hamlets of Selden and Farmingville, and west of Bald Hill. Notably, Telescope Hill was the site of a fire observation station operated by the New York State Conservation Commission and later the Conservation Department from 1918 to 1959.