CN Tower

Sometimes derided for being a tired attraction (after a 30-year run, it lost the title of world’s tallest free-standing structure a few years ago), Toronto’s icon is still indisputably in your face, providing astonishing views, particularly of all the new downtown construction, which climbs ever upward to its lower viewing deck. The CN Tower’s EdgeWalk, introduced a few years ago, gives thrill-seekers a chance to get some air walking on the roof and leaning vertiginously on their tether over the side of the main pod. Different LED light schemes play out on the tower’s exterior from dusk till 2am; the best one lights the main deck to look like a throbbing UFO hanging over the city.