This lighthouse is easily spotted while driving over the Tapan Zee Bridge in either direction. This caisson lighthouse was built between 1882 and 1883 and was first lit on October 1, 1883. It did not even have a refriderator, electricty, or indoor plumbing until after World War II. The light was built to protect ships from the shoals that lined the eastern edge of the Hudson River. It is the southernmost light in a series of lights that are on the banks of the Hudson River. A keeper and his family would live in the house and perform all of his duties year round.
I don't know the size of the original lens, but the light was deactivated in 1965. The county of Westchester took over the lighthouse in 1974 and had it placed on the National Historical Register in 1979.
This lighthouse is closed to the public, except for group tours. The best place to take pictures of the light are from Kingsland Point Park, in Tarrytown, New York. Follow Route 9W into Tarrytown. Head towards the water, then follow signs for Kingsland Point Park.