The Fairmont Château Laurier is a 660,000-square-foot hotel with 429 guest rooms in downtown Ottawa, Ontario, Canada, located near the intersection of Rideau Street and Sussex Drive and designed in the French Gothic Châteauesque style to complement the adjacent Parliament buildings. The hotel is above the Rideau Canal locks and overlooks the Ottawa River.
Château Laurier was commissioned by Grand Trunk Railway president Charles Melville Hays, and was constructed for $2 million, between 1909 and 1912 in tandem with Ottawa's downtown Union Station across the street. The two buildings were connected with a tunnel.
When the Grand Trunk became part of the Canadian National Railway in 1923, the Château Laurier became one of CN's most important hotels. In addition to hotel guests, the Château Laurier has also served over the years as the home of two important Ottawa institutions.