Never a country to settle for second best (at least not in the post-Mao era), the authorities in the People's Republic of China have agreed the construction of what will be the world's tallest building. Known appropriately as "Sky City", work will begin in June 2013 to build the 838 metre high building, a whole 10 metres higher than the current front runner, the Burj Khalifa in Dubai. The location of the new building is just outside the city of Changsha in Hunan Province, central China. It is being billed as the future of sustainable urbanisation and will eventually house over 30,000 people. Expected to be completed in just 7 months(!), the estimated construction cost is US$628 million, small beer for the fastest growing economy in the world. The construction of this building is good news for China's rising unemployment levels, but not so good news for the country's creaking environment. Health and safety, as well as corruption, may also emerge as key issues.