Ripley's Aquarium of Canada almost did not happen in Toronto. The company first floated the idea near Niagara Falls back in 2004, and it took the better part of a decade before the tanks finally filled, opening in October 2013 at a cost of around 130 million Canadian dollars.

Wedged between the CN Tower's base and Rogers Centre, the aquarium holds 5.7 million litres of water and more than 16,000 animals across 450 species. Its signature attraction, Dangerous Lagoon, is a football field's worth of glass tunnel with a moving walkway, gliding visitors past sand tiger sharks, sawfish and green sea turtles, while Planet Jellies houses the world's largest tank built purely for jellyfish.

VoiceMap's self-guided audio tours route walkers along this stretch of waterfront, threading the aquarium into the story of Toronto's stadium district, from Rogers Centre's curves to Steamwhistle Brewery's converted roundhouse and onward to the CN Tower.