Toronto's CN Tower stood 553.3 metres tall when completed in 1975 and held the title of the world's tallest freestanding, non-guyed structure for more than three decades. Dubai's Burj Khalifa surpassed it in 2007, but the CN Tower remains the tallest structure in the Western Hemisphere.
Record no. MRB-2026-005666
World's Tallest Freestanding Structure (1975-2007)
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.