This week on.. "Tallest structure in the world "

CN Tower
The CN Tower in Toronto, Ontario, Canada, standing at 553.3 m (1,815 ft), is the world's tallest completed freestanding structure on land

KVLY-TV
KVLY-TV mast in North Dakota, USA, which is still the tallest completed structure at 628.8 m (2,063 ft).




BURJ BUBAI
The tallest man-made structure is Burj Dubai, a skyscraper under construction in Dubai that reached 818 m (2,684 ft) in height on 17 January 2009.(For more information go to www.burjdubai.com/)