Burj Khalifa, Dubai

   Burj Khalifa known as Burj Dubai prior to its inauguration, is a skyscraper in Dubai, United Arab Emirates. It is the tallest building in the world. Construction began on 21 September 2004, with the exterior of the structure completed on 1 October 2009. The tower's architecture and engineering were performed by Skidmore, Owings and Merrill of Chicago, with Adrian Smith as chief architect, and Bill Baker as chief structural engineer. The primary contractor was Samsung C&T of South Korea, who with this project have built the last three tallest skyscrapers in the world.

  The building's completion coincided with the global financial crisis of 2008-2012, and with vast overbuilding in the country, this led to high vacancies and foreclosures. With Dubai mired in debt from its huge ambitions, the government was forced to seek multibillion dollar bailouts from its oil-rich neighbor Abu Dhabi. Subsequently, in a surprise move at its opening ceremony, the tower was renamed Burj Khalifa, said to honour the UAE President Khalifa bin Zayed Al Nahyan for the financial support given by him.