Harbourfront is a neighbourhood on the northern shore of Lake Ontario within downtown Toronto, Ontario, Canada. Part of the Toronto waterfront, Harbourfront extends from Bathurst Street in the west, along Queens Quay, with its ill-defined eastern boundary being either Yonge Street or York Street. Its northern boundary is the Gardiner Expressway. Much of the district was former water lots filled in during the early 1900s to create a larger harbour district.