Which luxurious hotel in Quebec City is a National Historic Site of Canada?

The luxurious Quebec City hotel that is a National Historic Site of Canada is Château Frontenac.

Officially Fairmont Le Château Frontenac, the hotel stands in Old Quebec’s Upper Town overlooking the Saint Lawrence River. It was built by the Canadian Pacific Railway as part of the grand railway-hotel movement, which encouraged long-distance travel and presented Canada’s cities through spectacular landmark architecture. New York architect Bruce Price designed the building in the Châteauesque style, with steep roofs, towers, turrets, and fortress-like massing inspired by French castles.

The hotel opened in 1893 and was named for Louis de Buade, Count of Frontenac, who served as governor of New France during two periods in the late seventeenth century. Expansions, including its central tower, gave the complex much of its iconic profile. Parks Canada designated the building a National Historic Site in 1981.

The Château is sometimes confused with other famous Canadian railway hotels, such as The Empress in Victoria or Fairmont Banff Springs. Those are also heritage landmarks, but Château Frontenac is the Quebec City hotel identified by this question.