The document discusses the history and evolution of skyscrapers from ancient times to modern day. It begins with early tall structures like the Tower of Babel and Great Pyramid of Giza. The first skyscrapers emerged in the late 19th century in Chicago and St. Louis with buildings around 10 floors tall. Important early 20th century skyscrapers included the Flatiron Building in New York at 87 meters tall and the Woolworth Building at 214 meters. The document concludes with a list of the top 10 tallest buildings in the world as of 2010, led by the Burj Dubai in the United Arab Emirates at 818 meters and 162 floors.