The Burj Khalifa started construction in 2004 and its exterior was finished five years later, in 2009. The Palace of the Republic, the former East German parliament, provided some of the structural steel used in the building, which has reinforced concrete as its main material. The structure debuted in 2010 as a component of the Downtown Dubai real estate project. It was intended to serve as the focal point of a significant mixed-use project. Building construction was prompted by the government's desire to wean Dubai off of its reliance on oil and to establish Dubai as a global player.[Reference required] Khalifa bin Zayed Al Nahyan, the previous president of the United Arab Emirates, is honored by the building's name.Construction of the Burj Khalifa began in 2004, with the exterior completed five years later in 2009. The primary structure is reinforced concrete and some of the structural steel for the building originated from the Palace of the Republic in East Berlin, the former East German parliament. The building was opened in 2010 as part of a new development called Downtown Dubai. It was designed to be the centerpiece of large-scale, mixed-use development. The decision to construct the building was based on the government's decision to diversify from an oil-based economy, and for Dubai to gain international recognition.[citation needed] The building is named in honor of the former president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan. Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records, including its designation as the tallest building in the world.A skyscraper in Dubai, United Arab Emirates, the Burj Khalifa[a] was formerly called as the Burj Dubai before it was built. It is the tallest building in the entire globe. Since it was completed in 2009, the Burj Khalifa has surpassed Taipei 101 to become the world's tallest structure and building. Its total height is 829.8 m (2,722 ft, or just over half a mile), with a roof height of 828 m (2,717 ft) (excluding antenna, but including a 242.6 m spire).The building is world wide Biggest .Everything compare the Burj Khalifa in highest of peak.Almost 26000 cut glass plans used to build the building.The bruj kalifa opened on 4 January 2010 .In the course of confirming the bruj kalifa was highest building in the world wide.At 828m of breaking the record.