The Burj Khalifa (or "Khalifa Tower") is currently the world's tallest skyscraper. I realize that as soon as this is posted it may no longer be so, as billionaire business men all over the world along with their countries are always competing with one another to be the biggest and the best. And when it comes to buildings just adding a cherry on top can get you that extra inch to be "King of the Hill", but so far since September 4, 2010 the Burj Khalifa is the tallest. How tall? 2,717 ft. That's over a half mile high.
On September 21, 2004 a team of architects and engineers including Adrian Smith (Chief Architect) and Bill Baker (Chief Structural Engineer) along with the rest of the team Skidmore, Owings and Merrill, and Samsung C&T of South Korea (Primary Contractor). The project was headed by Mohamed Ali Alabbar (Development Chairmen for Emaar Properties).
Originally it was named "Burj Dubai", but after the cost of building such a structure in downtown Dubai in the midst of a weakened world economy the team was forced to seek outside help from it's wealthier sister country Abu Dhabi. During the opening ceremony of the Burj Dubai on January 4, 2010 the tower was presented as the Buj Khalifa in honour of UAE (United Arab Emirates) President Khalifa bin Zayed Al Nahyan.
The Burj Khalifa tower is an apartment complex with room for 900 families, and is part of a larger development project in Dubai with 17 other residential towers, 50,000 houses, a mall, a 7.4 acre park, and a 30 acre lake. The total cost for construction of the tower was $1.5 billion.