Dezeen Wire: the world's tallest broadcast tower opened to the public for the first time today in Tokyo - The Independent
The 634-metre-high structure, named the Sky Tree, overtakes the Canton Tower in China, which is 34 metres shorter.
The world's tallest building (which comes under a different category in the Guinness World Records) is currently the 828-metre-high Burj Khalifa in Dubai, although a skyscraper of over 1000 metres is set to overtake it in Jeddah.