11 April 2016 Current Affairs: Dubai is planning to build one of its most elaborate structures yet with developers promising that it will dwarf the current world's tallest building – the Burj Khalifa. The new tower, based at the centre of a new development called Dubai Creek Harbour, is set to boast rotating balconies and landscaping inspired by the mythical hanging gardens of Babylon.Chairman of Dubai-based Emaar Properties Mohamed Alabbar, said the huge viewing tower would cost about $1bn (£700m) to build in the Arab emirate. The final height will be announced closer to the topping-out ceremony.The Burj Khalifa, which stands at 828 metres (2,700ft) and cost $1.5bn (£1.05bn) to build.Dubai hosts the Expo trade fair for real estate and development. The complex, a tribute to Arab ambition and European engineering, will be designed by the Spanish-Swiss architect Santiago Calatrava Valls.Promising the tower will be "a notch" taller than Burj Khalifa, the plans featured observation decks with 18 to 20 mixed-use floors including restaurants and a boutique hotel. The Burj Khalifa was completed in January 2010 but is set to be surpassed as the world's tallest building by a new structure in Saudi Arabia.The Jeddah Tower would be dwarfed by the Sky Mile Tower set to be built in Tokyo Bay, doubling the height of the Burj Khalifa. The mini-city, which has a completion date of 2045, would reach a height of 5,577ft and house around 55,000 people.