The Burj Khalifa in Dubai (in the United Arab Emirates) is officially the world’s tallest building since it opened on the 4th of January 2010. The building is 828 meters (2,717 feet) high and has 160 habitable floors. The Burj Khalifa as a floor space are of over 460,000 square meters (5,000,000 square feet). Construction on the skyscraper started in 2004 and was finished by October 2009. The Burj Khalifa also holds the record for the tallest structure ever built, the tallest extant structure, the tallest freestanding structure and the building with the most floors. The Burj Khalifa can also brag with the fact that it has the world’s fastest elevators (travelling at 64 kilometers and hour). The building also houses the world’s highest swimming (on its 76th floor) and the world’s highest mosque (on it’s 158th floor). The Burj Khalifa truly is a architectural marvel. This photo the Burj Khalifa has been selected as the Daily Cool Photo for the 25th of April 2010 on Running Wolf’s Rant. Watch this space for daily updates in the Photography and Babes categories.