TORONTO, May 10, 2013 - Tower Hill Development Corp. has unveiled plans for a 56-storey modernist condominium tower in midtown Toronto that it says will transform the district with its “stunning, cantilevered” terrace design. The company, a third-generation family business, has retained New York-based Pei Partnership Architects in collaboration with Toronto’s Quadrangle Architects to design the tower at 2221 Yonge St.