Plans for revolutionary 420-meter rotating skyscraper in Dubai unveiled . 80-story tower will be built on a site that was once home to the world's tallest building and is now being used as an office complex by Dubai's government. Advanced plans to build second tower in Moscow . Dubai is experiencing a construction boom , with the Burj tower set to claim the title of the world 's tallest building when it is completed in 2009 . Tower will be built from prefabricated units ; due to be completed by 2010 .
Plans for revolutionary 420-meter rotating skyscraper in Dubai unveiled . 80-story tower will be built on a site that was once home to the world's tallest building and is now being used as an office complex by Dubai's government. Advanced plans to build second tower in Moscow . Tower will be built from prefabricated units ; due to be completed by 2010 .