This huge tank of a building (it holds 1.5 million gallons of water) at the base of the CN Tower opened in 2013, stealing some of the Toronto Zoo’s thunder. The main attraction, the moving-floor tunnel under the shark tank, sets the tone for the dreamy magic of Ripley’s Aquarium of Canada. The colourful slow-motion coral tank may induce a trance. Those with enough gumption can touch horseshoe crabs, sharks and stingrays in a controlled environment. Get there before 11am or after 4pm to avoid drowning in crowds. Dive shows take place every two hours.