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Tokyo Sky Tree, a new landmark tower which is still under construction in Tokyo, dwarfs other buildings Tuesday, March 1, 2011. The new broadcast tower reached the height of 1,971 feet (601 meters) Tuesday and became the world's tallest freestanding tower, outgrowing the 1,968 feet (600-meter) Canton Tower in China's southwestern city of Guanzhou, operator Tobu Tower Sky Tree Co. said. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, FOR COMMERCIAL USE ONLY IN NORTH AMERICA

Tokyo Sky Tree, a new landmark tower which is still under construction in Tokyo, dwarfs other buildings Tuesday, March 1, 2011. The new broadcast tower reached the height of 1,971 feet (601 meters) Tuesday and became the world's tallest freestanding tower, outgrowing the 1,968 feet (600-meter) Canton Tower in China's southwestern city of Guanzhou, operator Tobu Tower Sky Tree Co. said.

World's tallest buildings in pictures

3 April 2012

Some of the world's most spectacularly tall buildings in photos.

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