Since it opened 21 years ago, the CNTower has been a source of pride of
accomplishment for Canadians. It is truly a wonder of modern design,
engineering and construction. At a height of 553.33m (1,815 ft, 5 inches), it
is the World's Tallest Building and FreeStanding Structure, an important
telecommunications hub, and the centre of tourism in Toronto.  Each year,
approximately 2 million people visit the world's tallest building to celebrate its
achievement, take in the breathtaking view and enjoy all of the attractions the
CN Tower has to offer. History The Tower inspires a sense of pride,
inspiration and awe for Canadians and tourists alike.  However, its origins are
firmly rooted in practicality.
During Toronto's building boom in the early 70's, a serious problem was
developing. People were experiencing poor quality television. And it wasn't just
the sitcoms. The pre-skyscraper transmission towers of Toronto stations
were simply not high enough anymore. As office buildings were reaching higher
and higher, TV and radio reception began suffering from 'ghosting', or a
weakening of clarity. Signals from Toronto and from Buffalo, New York
were bouncing off the buildings. As a result viewers often saw a weaker station
superimposed over another. In effect, they were watching two shows at once.
And this was before channel surfing allowed us to do this on purpose. It
became clear that what we needed was an antenna that would not only be taller
than any building in the city, but one that would be taller than anything that would
probably ever be built.
In 1972, Canadian National (CN) set out to build a tower that would solve the
communications problems, serve as a world class entertainment destination,
and achieve international recognition as the world's tallest tower.
The Tower's microwave receivers are located 338 m (1,109 ft) above the
ground in the radome (the donut-shaped collar at the base of SkyPod).  The
important VHF, UHF and television equipment intrinsic to the Tower's
purpose as a broadcast transmission facility are located here.  Incoming
signals are monitored and fed to the antenna for transmitting.  Further up at
360 m (1,180 ft) is the centre of FM broadcasting in Toronto.  CFNY,
CHUM, CHFI, CKFM, Q107, CHIN,CJRT, CJEZ, CBC radio and City TV,
CFTO-TV, TVO, CBLT, CFMT,Global, CBLFT, and CICA all use the

 The CN Tower is a communications and observation tower in Downtown Toronto, Ontario, Canada. Standing 553.33 metres (1,815.4 ft) tall,[4] it was completed in 1976, becoming the world's tallest free-standing structure and world's tallest tower. It held both records for 34 years until the completion of the Burj Khalifa and Canton Tower. It remains the tallest free-standing structure in the Western Hemisphere, a signature icon of Toronto's skyline, and a symbol of Canada,[5][6] attracting more than two million international visitors annually.[7]
Its name "CN" originally referred to Canadian National, the railway company that built the tower. Following the railway's decision to divest non-core freight railway assets, prior to the company's privatization in 1995, it transferred the tower to the Canada Lands Company, a federal Crown corporation responsible for real estate development. Since the name CN Tower became common in daily usage, the abbreviation was eventually expanded to Canadian National Tower or Canada's National Tower. However, neither of these names are commonly used.[8]
In 1995, the CN Tower was declared one of the modern Seven Wonders of the World by the American Society of Civil Engineers. It also belongs to the World Federation of Great Towers, where it holds second-place ranking.



Tower's superior transmission capabilities.