The new tower, Tokyo Sky Tree becomes the world's tallest freestanding broadcast tower after reaching the height of 1,971 feet (601 meters) at 1:29 pm (0429 GMT, outgrowing the 1,968 feet (600-meter) Canton Tower in China's southwestern city of Guangzhou, operator Tobu Tower Sky Tree Co. said. The tower will stand 2,080-foot (634-meter) tall when it's completed later this year.