Lighthouse: Saugerties, New York
Credit: Colin Young / Getty Images

The Saugerties Lighthouse was built in 1869 to guide boats through shallow Hudson River waters safely into the port of Saugerties. While the light is no longer used for navigation, the building is a bed and breakfast furnished in 1920s décor. It’s private, as visitors cannot drive to the lighthouse, and it can only be reached via boat or a half-mile-long trail through the Ruth Reynolds Glunt Nature Preserve. The trail crosses a tidal flat, which is impassable when the tide is in. But once ensconsed, seclusion seekers inhabit two small apartments with excellent views, one looking west towards the Catskills, and the other facing the Hudson.