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Wikipedia: A skyscraper is a tall, continuously habitable building. There is no official definition or height above which a building may clearly be classified as a skyscraper. Most cities define the term empirically; even a building of 80 meters (262 feet) may be considered a skyscraper if it protrudes above its built environment and changes the overall skyline.
![[The Great Pyramid of Giza, circa 2560 BC, was 146 ]](http://images.ookaboo.com/photo/s/Great_Pyramid_of_Giza_2010_s.jpg "The Great Pyramid of Giza, circa 2560 BC, was 146 ")
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![[Tower 2 of the International Finance Centre in Hong Kong is one of the 20 tallest buildings in the world]](http://images.ookaboo.com/photo/s/IFC_HKSAR_s.jpg "Tower 2 of the International Finance Centre in Hong Kong is one of the 20 tallest buildings in the world")
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 from Wknight94 |
from Calvin yeung |
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