Parliament Hill, 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.
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 not expected to be complete until after 2028.