Sussex Drive Sussex Drive Sussex Drive () is a major street in Ottawa, Ontario, Canada, and one of the city's major ceremonial and institutional routes. Running roughly parallel to the Ottawa River, Sussex Drive begins at Rideau Street at the north end of Colonel By Drive, running north and then bending northeast until MacKay Street, where it becomes the Sir George-Étienne Cartier Parkway. Sussex is a particularly famous street in the capital, as it is home to the Prime Minister's residence at 24 Sussex Drive and home to the Governor General's residence at Rideau Hall. Also located on Sussex are Ottawa's former
Gatineau Park and deciduous forests to windswept savannas. The mountain is also home to a number of trees which are rare in the area, including some that are nearly 600 years old. For many years, a red-coloured cedar cross was located on top of King Mountain. Originally erected by Old Chelsea's parish priest, Father Maguire, it could be seen for miles around. It eventually rotted and fell over the cliff. Gatineau Park provides habitat for many species of birds including the pileated woodpecker and common loon. Turkey vultures and migrating hawks may be observed soaring on the thermals above the Eardley Escarpment.