Harbor Plaza/Great Lakes Aquarium

This Duluth Harbor Cam looks across Harbor Plaza toward the Great Lakes Aquarium, on the waterfront at the western tip of Lake Superior. It is one of the Ports and marinas cams United States viewers watch for vessel movements: the harbor is the busiest on the Great Lakes, and the camera's stretch of water is where lakers and saltwater ships line up before passing under the Aerial Lift Bridge into the inner harbor. Boats, dock activity and lake weather move through the frame, and the picture is usually a refreshing still that updates often enough to follow an approach. Open it when you know a ship is due, in the morning for calm lake conditions, or on a gale day when the spray comes over the piers.