The CN Tower, at 553.33 metres (1,815 ft., 5 inches) is the tallest building on land in the world. It is located in the city of Toronto, Ontario, Canada, and is considered the signature icon of the city. The CN Tower attracts over two million visitors annually.

CN originally referred to the Canadian National Railway, but following the railway's decision to divest non-core freight railway assets during the lead-up to the company's privatization in 1995, the CN Tower was transferred to the Canada Lands Company (CLC), a federal Crown corporation responsible for real estate development. Since the citizens of Toronto wished to retain the name CN Tower, the abbreviation CN now officially stands for Canada's National rather than the original Canadian National.

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