CHECK--Niagara Falls (165ft), NY & ON. Most powerful waterfalls in North America. I've been in all 4 seasons, and to both the U.S. and Canadian side. The best is the Canadian side, and in the winter!! My favorite views are behind the falls, the Skylon Tower, and the SkyWheel. I haven't been yet, but the view from Goat Island is supposed to be awesome.