Parliament Hill (Colline du Parlement, colloquially known as The Hill, is an area of Crown land on the southern banks of the Ottawa River in downtown Ottawa, Ontario, Canada. Its Gothic revival suite of buildings, and their architectural elements of national symbolic importance, is the home of the Parliament of Canada. Parliament Hill attracts approximately three million visitors each year. Law enforcement on Parliament Hill and in the parliamentary precinct is the responsibility of the Parliamentary Protective Service (PPS).
Originally the site of a military base in the 18th and early 19th centuries, development of the area into a governmental precinct began in 1859, after Queen Victoria chose Ottawa as the capital of the Province of Canada. Following several extensions to the parliament and departmental buildings and a fire in 1916 that destroyed the Centre Block, Parliament Hill took on its present form with the completion of the Peace Tower in 1927. Since 2002, an extensive $3 billion renovation and rehabilitation project has been underway throughout all the precinct's buildings; work is expected to be completed after 2028.
Parliament Hill is a limestone outcrop with a gently sloping top that was originally covered in a primeval forest of beech and hemlock. For hundreds of years, the hill served as a landmark on the Ottawa River for First Nations and, later, European traders, adventurers, and industrialists, to mark their journey to the interior of the continent. After Ottawa, then called Bytown, was founded, the builders of the Rideau Canal used the hill as a location for a military base, naming it Barrack Hill. A large fortress was planned for the site following the War of 1812 and the Upper Canada rebellion, but the threat of an American invasion subsided, and the project was scrapped.
In 1858, Queen Victoria selected Ottawa as the capital of the Province of Canada. Barrack Hill was chosen as the site for the new parliament buildings, given its prominence over both the town and the river, as well as the fact that it was already owned by the Crown.