1. Burj Khalifa, United Arab Emirates - 2717 Feet The Burj Khalifa, originally known as the Burj Dubai, towers above the city's already burgeoning skyline. It has 163 floors and a height of 2,717 feet tall, and is the tallest building in the world. Primarily constructed from steel and concrete, the building is the design by Owings, Skidmore and Merrill of Chicago, who were also responsible for the design of famous skyscrapers such as Willis Tower and One World Trade Center. The South Korean company Samsung C&T carried out the engineering and construction of the structure, which was completed in the year 2010. The building was a project by the United Arab Emirates’ government to shift the country’s economy from solely oil-based to a more tourism- and service-based nation. The building has 30,000 residences, 19 residential towers, a man-made lake which occupies 30 acres, parkland which occupies seven acres, nine hotels, and a shopping mall. This superstructure has given