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.

1. SKYSCRAPERS

2. PreHistory of Skyscrapers Tower of Babel Great Pyramid of Giza, built in 2560 BC, was 146 meters tall

3. History of Skyscrapers Home InsuranceBuilding Chicago, 1884 Ten floors Sullivan’sWainwrightBuilding St. Louis, 1891 Ten floors

4. Someimportantskyscrapers FlatironBuilding NY 1902 87 m WoolworthBuilding NY 1913 214 m (worldtallestbuildinguntil 1930) WorldTrade Center (Twin Towers) NY 1973-2001 (Destroyed) 417 m EmpireStateBuilding NY 1931 381 m 102 floors

5. TOP TEN SKYSCRAPERS

6. BurjDubai BurjDubai Dubai UnitedArabEmirates 2010 Floors 162 818 m

7. Taipei 101 Taipei 101 Taipei Taiwan 2004 Floors: 101 508 m

8. FederationTower Moscow Russia 2010 Floors: 93 506 m FederationTower

9. ShanghaiWorldFinancial Center ShanghaiWorldFinancial Center Shanghai China 2008 Floors: 101 492 m

10. International Commerce Center International Commerce Center Hong Kong China 2010 Floors: 118 484 m

11. PetronasTowers PetronasTowers Kuala Lumpur Malaysia 1998 Floors: 88 452 m

12. Nanjing GreenlandFinancialCmplx. Nanjing China 2009 Floors: 89 450 m Nanjing GreenlandFinancialComplex

13. WillisTower Willis Tower Chicago IL United States 1974 Floors 108 442.3 m

14. Guangzhou International Finance Center Guangzhou International Finance Center Guangzhou China 2009 Floors: 103 440 m

15. DubaiTowers Doha DubaiTowers Doha Doha Qatar 2010 Floors: 88 437 m