You can stand on a little bridge that runs over 42nd Street at the eastern end, and see all the way to New Jersey (13 long blocks and a river away). Nice view, I think, and not just because it includes my fave NYC PTDD building.
My favorite moment in this cathedral was the wedding of an actress (friend of a friend), who sailed down the aisle proudly 8 months pregnant. The child (a girl) was born on time a month later, and named Margo Channing (after Bette Davis' character in All About Eve).