What does the CN Tower represent in Canada?

The CN Tower in Toronto is a 553.3-metre concrete telecommunications and observation tower, completed on April 2, 1975 and opened to the public on June 26, 1976. It was the world's tallest free-standing structure on land for 32 years, from 1975 until the completion of the Burj Khalifa in Dubai in 2007, and remains the tallest free-standing structure in the Western Hemisphere. The tower is owned by Canada Lands Company, a federal Crown corporation.

Canadian National Railways began the tower in February 1973 to solve a broadcasting problem: signals from existing Toronto towers were blocked by the city's growing skyline of office buildings. The structure consists of a hexagonal concrete core supporting the SkyPod observation deck at 446 metres and the main observation deck at 346 metres, including the LookOut, the Glass Floor, and the EdgeWalk hands-free walk along the outside of the main pod opened in 2011.

The tower was designated a Wonder of the Modern World by the American Society of Civil Engineers in 1995, alongside the Channel Tunnel, the Empire State Building, the Golden Gate Bridge, the Itaipu Dam, the Delta Works, and the Panama Canal. It draws about two million visitors a year, hosts the rotating 360 Restaurant at 351 metres, and is illuminated each night by a programmable LED system that lights up in colours marking national days, charitable causes, and major events.

The CN Tower has become a graphic shorthand for Toronto and a recognised silhouette in Canadian advertising, films, and tourism material. It functions as a telecommunications hub for more than 16 broadcast television and FM radio stations, including CBLT-DT (CBC Toronto), CITY-DT, and CFTO-DT, and supports cellular and microwave relay services.