1815 feet 5 inches when the mast was completed in 1976 (Source: Copyright 1975, Sun Media Corporation)
http://en.wikipedia.org/wiki/CN_Tower Hope this wiki article is what you are looking for
Assuming that you mean tallest by "biggest" and not most square footage: Burj Khalifa known as Burj Dubai prior to its inauguration, a skyscraper in Dubai, United Arab Emirates, is currently the...
The CN Tower commenced building in 1973 with a completion date of 1975. It is a communications tower used by all of the major radio's, television and communications within Canada. It is the tallest...