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In page Parliament Hill:

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Development of the area, which in the 18th and early 19th centuries[citation needed] was the site of a military base, 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. In 1976, the Parliament Buildings and the grounds of Parliament Hill were designated as National Historic Sites of Canada. Since 2002, an extensive $3 billion renovation-and-rehabilitation project has been underway throughout the precinct's buildings that is expected to be completed after 2028.