p14
the 64 ft Navesink Twin Lighthouses are atop a 200 ft steep hill in Highlands, NJ.  One is Octagon and the other is square, built in 1862 of brownstone with a 320 ft building connecting them where the keepers lived, which is now a museum.  The public can climb the 64 steps of the octagon light.  The view from the top of the light gives you a view of Sandy Hook and its light and the New York City skyline.  The day I visited was foggy and low clouds so you couldn't  see NY.  Climbing is free.  These towers is where Marconi conducted his first wireless experiments.  The towers were the first in the US to use Fresnel Lenses.