Harrington Lake Diefenbaker suggested that he needed a quiet place to go fishing, not too far from Ottawa. Later that year, Harrington Lake was chosen as the site for an official country residence and the buildings were formally designated as a secure residence for Canada’s prime ministers. During the first prime ministership of Pierre Trudeau, his then-wife, Margaret, added a vegetable garden; according to Kim Campbell's autobiography "Time and Chance", the garden still provided the house with fresh produce at the time of that writing. Campbell was the only Prime Minister to have spent her entire term in office residing at Harrington
Sussex Drive residential condo and retail complex. The most significant recent addition to Sussex Drive, having been opened on December 6, 2008, is the Delegation of the Ismaili Imamat, a representative building for His Highness the Aga Khan. Sussex was originally three different streets. The section in the Byward Market was originally named Metcalfe Street, and the portion east of the Rideau River was known as Ottawa Street. The centre portion, named for Prince Augustus Frederick, Duke of Sussex, was then known as Sussex Street. Sussex Street was renamed Sussex Drive in 1967. In the 1960s the National Capital Commission launched a