World's tallest building in the world. Beautiful piece of art, an incredible engineering achievement. All of those things and more are the Burj Khalifa. Burj Khalifa is a magnificent building that is much more than just the highest building in the world. It exemplifies cross-cultural harmony, unrestricted development, and encouraging Middle Eastern privilege. It also demonstrates Dubai's expanding significance in a dynamic world. This city has gone from being a regional hub to a global one in less than 30 years.