The CN Tower in Toronto is the tallest structure in North America standing at a huge 553 metres, and was the tallest structure in the world for 31 years until the monstrous Burj Dubai building went higher last year. The tower is basically a communications tower used for broadcasting TV and the like and opened to the public as a the world’s highest lookout in 1976. The tower has two visitor levels one at 346 metres and another one 100 metres higher at 446 metres offering amazing views of the surrounding city and lake, and on a good day you can even see into the USA and Niagara Falls. One highlight of the tower is a glass bottom floor where brave people can see nothing below their feet- it really is a weird feeling. The tower is a member of the Federation of Great Towers and was declared one of the Seven Wonders of the World by the American Society of Civil Engineers.
for more information: http://www.cntower.ca