The last of my lighthouse images (for now) this one will require a boat to get this close. According to the Portsmouth, NH website, it “flashes a brilliant white beam every 15 seconds and, in foggy weather, sounds a horn every 30 seconds.” However, we were there on a clear day and still heard the horn every 30 second. There is a catwalk between the house and the light. The guide told us that it keeps getting washed away by storms and needs to be rebuilt. I’m not sure why they rebuild it because the light has been automated since 1896.