With 88 storeys reaching a height of 420,5 metres, the Jin Mao Tower, which literally means 'Gold Luxuriance Building' in Chinese, is a perfect combination of traditional Chinese architectural style and the world's modern architectural technology. The first 2 floors are a capacious and bright lobby. From the 3rd to the 50th floor are spacious offices, which are open-plan (column-free) with a floor-to-floor height of 4 metres. The 51st and 52nd floors are mechanical rooms. The Grand Hyatt Shanghai hotel occupies floors 53 to 87. It is the world's tallest five-star hotel in terms of distance from the ground, which boasts a 152m barrel-vaulted atrium that is lined with 28 annular well-illuminated corridors and staircases arrayed in a spiral. The 88th floor houses the Skywalk, a 1520-square-metre indoor observation deck, which is the tallest and biggest one of its kind on the Chinese mainland. It offers a panoramic view of Shanghai (text from website Jin Mao Tower).