I'm way behind you people. I've seen 60 United States lighthouses including 5 at a great distance, and climbed 4 of the 60(generally I don't climb them because of knee problems). There are another eight that I'm not completely sure whether I have seen them or not. When I was a kid, we used to spend the summer in Woods Hole, and our landlord was a boat broker who used to take us out sailing sometimes. So I'm sure I've seen some of the lighthouses around there, but I didn't record it at the time (being only in grade school)

I've also seen at least 9 lighthouses outside the US. (Puerto Rico, Santo Domingo, Barbados, Bermuda, Bahamas and Aruba)