Sleepy Hollow's postcard-perfect lighthouse operated from 1883 until the Tappan Zee Bridge's navigational lights rendered its service as unnecessaryin 1955. Concerned community members saved it from demolition in the 1960s and it sat vacant until reopening as a public monument in1983, 100 years after its inception. Nowvisitors only have to cross a little footbridge to enter what once was a live-in building accessible only by rowboat.