The CN Tower in the southern downtown Toronto is a 553 meter high television tower and the city's landmarks. He from 1975 to 2009, the highest television tower in the world. At the same time, he from 1975 until 2007, when the Burj Khalifa has a height of 555.30 meters reached, the tallest freestanding and not guyed structure of Erde.Er serving the telecommunications and the proliferation of more than 30 television and radio programs.
The construction of the TV tower was just 40 months, which, especially for its time, an unusual construction output showed. The tower was built to improve the radio transmission and should not initially be open to the public. Today it is a tourist main attraction of the Canadian metropolis and recorded with its different levels, viewing platforms and the revolving restaurant every year up to two million visitors.
The skilled in the art architectural viewed as successful tower evolved over the years into a symbol of national significance for Canada and was incorporated in 1995 by the American Society of Civil Engineers in the list of seven wonders of the modern world. Since its completion, he was often the scene of spectacular stunts and record performances.
The idea for a transmission tower for distribution of radio and television program in Toronto goes back to the 1960s. During this time the skyscrapers grew in the Financial District and thus worsened the reception of radio and television stations. The density and height of new skyscrapers weakened the signals the Toronto television stations in some cases substantially, which is usually manifested itself by superimposing two programs. Also, the radio reception was weakened.
The acronym CN is originally derived from Canadian National Railways from, the Canadian railway company which had built by its subsidiary CN Tower Limited the tower together with the Canadian Broadcasting Company (CBC) for improving the television reception. 1995 sold the railway company the TV tower at the federal agency Canada Lands Company. Until then the tower led to identical with the logo of the railway company logo CN. After selling this lettering was no longer used.