CN Tower

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Ken Faulks

The American Society of Civil Engineers classified the CN Tower as one of the Seven Wonders of the Modern World.

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At 553.33 m (1,815ft, 5 inches) and for the last thirty years, the CN Tower has held the record as the tallest building, tower, and freestanding building. It is the tallest building in the Western Hemisphere.

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Canadian National Railways began construction of the CN Tower on February 6, 1973 and was completed in 40 months in June 1976. The total cost of the construction was $63,000,000.

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cntower.ca gocanada.about.com