Sea Gate is a large gated community at the western tip of Coney Island (aerial view). To keep the grubby public out, each of the two street entrances has a guard on duty at all times. I asked if I could enter as a visitor and walk around, but the guard said no. You can sneak into Sea Gate from the beach, but I figured it would be wise to try to get official permission if I was going to spend hours walking every block in the neighborhood. Walking Sea Gate isn't a necessity for me, since it's a private neighborhood, but I'd do it if I got the chance.