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
Lake Maria State Park park emphasized conservation over recreation, and so hike-in campsites were made in lieu of a drive-in campground. The park was expanded to the north and west in 1980 to include the whole shoreline of Maria Lake. Incidentally the lake originally called Maria Lake was renamed Bjorkland Lake by the DNR, and "Maria Lake" became an arm of Silver Lake, which lies mostly outside the park's western boundary. Lake Maria State Park does not have a traditional drive-in campground. Instead 17 backpacking sites and three camper cabins are scattered throughout the park, only accessible by a hike of . Two primitive