Opened on January 11, 1967, Le Château Champlain was constructed by CP Hotels to accommodate the crowds visiting Expo 67.

[3] Canadian Pacific Railways chairman Buck Crump proposed naming the hotel after the explorer and founder of Quebec City and New France, Samuel de Champlain.

[5][6] The hotel stands 139 metres (456 ft) high with 40 floors and was designed by Quebec architects Roger D'Astous and Jean-Paul Pothier.

[7][8] The arch-shaped windows were intended by the designers to complement the Romanesque Revival arches of nearby Windsor Station, another Canadian Pacific property.

[9][10] The Château Champlain has 596 guest rooms and 19 suites along with a health and fitness centre with cardiovascular and weight lifting equipment.