Symbols of technological development and urban density, tall buildings as we know them today emerged in the late 19th century, primarily in the United States, in response to rapid growth in urban commerce and the need to expand cities without consuming more land. The term skyscraper, for instance, was coined in the 1880s and originally referred to buildings of about 10 to 20 stories—an impressive height at the time.
However, the idea of building vertically is far older than steel-and-glass skyscrapers suggest. Long before the Industrial Revolution, several societies were already experimenting with vertical urbanization as a solution to spatial constraints, territorial defense, or environmental adaptation.
