Mom's neighbors' lighthouse. Yes, it's a real, working lighthouse. The property (and hence, the lighthouse) is privately owned, so it's not open to the public, but it still lights up.
When I was growing up, a family called the Keviches lived there. They were immigrants from Yugoslavia and the father was (and likely still is) a fantastic woodworker. He's the one who built the lighthouse. My brother & I were friends with their kids, so we were around when they built it and we got to play in it occasionally. Insider tidbit: The tower was originally square, but not for long.