Burj Khalifa is the highest building in the world. It is 828 meters (2,717 feet), high. Three times tall as the Eiffel tower. Burj Khalifa is located in Dubai.
Before you opened the Burj Khalifa it was called Burj Dubai
The construction started in 2004 and was finished in 2009, and was officially opened 4th of January 2010. It has 162 floors.
Before Burj Khalifa was built Taipei 101 was the highest building in the world.
The name of the person who designed the building is Adrian smith, he had worked with Skidmore, Owings, and Merril