Renderings have been released of an eye-opening Las Vegas resort that takes the form of a giant moon. Its name? 'Moon', naturally. According to the Canadian entrepreneurs behind it, it would cost £3.6billion ($5billion) to build and, with a height of 224 metres (735ft), would become the joint-second-tallest building in Sin City with the JW Marriott, which is currently the second-loftiest structure behind the 350m- (1,149ft) tall Strat Observation Tower. The celestial retreat – which would be the world's largest sphere - features 4,000 hotel rooms, a 'crater café', a spa, a casino, a lagoon and guests seeking a space-age...