When the CN Tower opened in 1976 at 553 mts high, it was the world’s tallest free standing structure and the world’s tallest tower. It has since been surpassed by other constructions but still manages to hold on to some superlatives. Whatever records it does or doesn't boast, a visit here is certainly an exhilarating experience. The glass elevators will whisk tourists up into the skies in a flash to observation decks where they can savour views of Toronto, Lake Ontario and if lucky, Niagara Falls. The first stop will probably be the Lookout Level on the 113th floor which takes under a minute to get to in the high speed elevators. From here, one can descend to the 112th with its glass floor.