Chinese company plans to build world's tallest building in only 90 days

http://www.wired.co.uk/news/archive/2012-06/15/chinese-skyscraper-built-in-90-days

Broad Sustainable Building (BSB) claims the 838m-tall SkyCity One will be assembled in the southern Chinese city of Changsha from prefabricated materials built offsite. The building will be 10m taller than the Burj Khalifa in Dubai, currently the tallest manmade structure on earth.
SkyCity One, with a rather imposing design, will contain 1,610,000m² across 220 storeys, containing a mix of residential, commercial and retail space and capacity for between 70,000 to 120,000 people.