Ripley's Aquarium of Canada was originally planned in 2004 to be built in Niagara Falls, Ontario next to what is now Great Wolf Lodge around 2007, but plans fell through and Ripley's eventually relocated to Toronto. Construction began on the attraction in August 2011 with a final cost approaching $130 million. 
Located at the base of the CN Tower, it connects directly with the SkyWalk and the aquarium is home to 16,000 animals. The aquarium holds 5.7 million litres (1.5 million gallons) of water and shows marine and freshwater habitats from around the world. The building features a multi-facetted shell clad in large aluminum panels, with the roof of the main entrance that "gives the illusion of the earth’s crust peeling away to reveal a window into the aquatic world. There are also coloured surfaces that juxtapose reflective aluminum soffits, per the architects.