Navesink Twin Lights
A lighthouse existed on the site since 1828, when it became an important guide and landmark for ships navigating the treacherous entrances to New York Harbor. The current lighthouse was constructed in 1862. The non-identical towers by day and the two beacons by night—one flashing and one fixed—allowed ready identification by mariners of the identity of the facility, thus allowing a rough determination of their location approaching the harbor. -from Wikipedia
historiclighthousewaterfront
