Burj Khalifa in Dubai, United Arab Emirates is currently the tallest building in the world, and is also the tallest structure (including buildings and masts) to ever be erected. Opened in 2010 the skyscraper is 2,722 feet high, and was named after Abu Dhabi’s ruler and UEA President, Khalifa bin Zayed Al Nahyan. Burj Khalifa is also over a thousand feet taller than the previously tallest building in the world, Taipei 101. Work began on Burj Khalifa at the beginning of 2004 and ended in December, 2009. Adrian Smith designed Burj Khalifa, and his company at the time, Skidmore, Owings and Merrill (SOM), had been responsible for designing the One World Trade Center. Costing $1.5 billion to construct, Burj Khalifa has 57 lifts and 8 escalators, and offers hotel facilities as well as being used for residential purposes.
photos: Donaldytong / Tim.Reckmann / Rama / all from wikicommons