The United Building by Davpart Inc. is North America's tallest architectural heritage retention development. A residential tower will rise from the historic Maclean Publishing Company/Maclean-Hunter Building in Toronto. The resulting mixed-use 55-storey high-rise will feature the restored heritage structure with offices and retail at the base, and new residences above. This development will offer a rare opportunity to live, work and play on University Avenue, one of Toronto's most prestigious thoroughfares.