The first new building of Toronto's waterfront redevelopment opened this week. Corus Quay, designed by Jack Diamond, principal with Diamond and Schmitt Architects is a 482,000 sq ft commercial building on a remediated brownfield site on the edge of Lake Ontario in the city centre. The building is owned and managed by the City of Toronto's arms-length real estate development company, Build Toronto, and named for its principal tenant, Corus Entertainment.