Designed by Italian architects Luigi Moretti and Pier Luigi Nervi, Tour de la Bourse (Stock exchange tower) was finished in 1963. At the time it was Canada's tallest skyscraper, the world's 20th tallest skyscraper and the tallest one in the world outside of the USA. The original plan was a set of three towers identical to this one but the plan never came through, unfortunately.
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The tower itself is considered by many to be a masterpiece of the International style of skyscraper design. Its façade, fully renovated in 1995, features a bronze-tinted anodized aluminium curtain wall, forming a strong contrast with the slightly slanted pre-cast concrete columns at the four corners, giving the whole a subtly convex aspect. It is divided into three roughly equal blocks by mechanical floors whose corners are recessed in an octagonal shape, creating small open-air interstices behind the columns at these levels. One couple of Peregrine Falcons has been nesting inside the 32nd floor recess since 1984.
This 190 m (623 ft), 47-story building was the world's tallest reinforced concrete tower until the completion of Lake Point Tower in Chicago in 1968, and the tallest building in Canada until the completion of Toronto's Toronto-Dominion Centre in 1967.
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The buildings is also notable because it was the target of a terrorist bombing On February 13, 1969. the Front de libération du Québec set off a bomb at the Stock Exchange, the blast injured 27 people.
The tower is currently Canada's 12th tallest building, North America's 200th tallest building and the world's 529th tallest.