"Father of urban planning," originator of the grid street plan
A Greek architect and thinker, called by Aristotle the "father of urban planning." Before him, Greek cities mostly grew naturally, their streets crooked and tangled. He was the first to plan a whole city on a regular right-angle grid — laying streets in a straight checkerboard, dividing the city into clearly functional residential, public, and religious zones. He rebuilt Miletus and planned the port of Piraeus with this "Hippodamian grid." This rational, geometric, replicable layout was later developed by the Romans, and echoes even today in the gridded cities like Manhattan.
Hippodamus did what no one had systematically done before: before a city was built, he planned it on paper as a regular grid, streets crossing at right angles, blocks clearly zoned by function. He believed a rational urban order could shape a rational, harmonious civic life. Two thousand years later, from Roman camps to countless American grid cities, all repeat the grid he first drew.
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