CURRENTLY under construction, these pictures offer a first glimpse of the luxury that awaits passengers on the world's largest cruise liner. The Oasis of the Seas will be a state-of-the-art travelling city complete with a shopping mall, numerous bars and restaurants, and an outdoor amphitheatre the size of a football field with its own micro-climate and rock-climbing walls. The 220,000 tonne behemoth - which will be 1,081ft long and tower 213ft above the water line - will have a staggering 16 passenger decks. She is currently being built at a cost of 610million in Aker Yards in Turku, Finland and is due to set sail next year. Designed under the name Project Genesis, she was rechristened Oasis of the Seas last month, following a contest to name the ship. The cruise liner is scheduled to hit the seas in late 2009, when she will operate Caribbean cruises out of Port Everglades in Florida. Construction on a sister ship, Allure of the Seas, is due to begin shortly.