Tokyo Sky Tree 3D Puzzle, large Size. Puzzle includes 71 pieces, ages: 10+, foam Core Centre, easy to assemble, no scissors required, no glue required.The Tokyo Sky Tree is a broadcasting, restaurant and observation tower under construction in Sumida, Tokyo, Japan. It has been the tallest artificial structure in Japan since 2010. The tower reached its full height of 634.0 metres (2,080 ft) in March 2011 but will be completed in 2012. One of Tokyo Sky Tree's main purposes is as a television and radio broadcasting tower. The Tokyo Sky Tree is currently (Nov 2011) the tallest tower in the world. It is taller than Canton Tower (600 m (1,969 ft)); the tallest structure on an island, taller than Taipei 101; and the second tallest structure in the world, after the Burj Khalifa in Dubai.