Niagara Falls, Ontario, is a Canadian city at the famous waterfalls of the same name, linked with the U.S. by the Rainbow Bridge. Its site on the Niagara River's western shore overlooks the Horseshoe Falls, the cascades' most expansive section. Elevators take visitors to a lower, wetter vantage point behind the falls. A cliffside park features a promenade alongside 520-ft.-high Skylon Tower with an observation deck.