The height of Tokyo Sky Tree, now under construction in Tokyo's Sumida Ward, topped 600 meters, making it the world's tallest self-standing tower.

Until yesterday, the Canton Tower in China's Guangdong Province held the record. Tokyo Sky Tree will reach its target height of 634 meters by the end of March. The project, which began in July 2008, will be completed in December. It became the tallest tower in Japan in March last year after topping the 333-meter-high Tokyo Tower.