The exact nature of his theories has not been recorded by any of the Greek writers who name him.

Aristotle, however, states that he introduced the principle of straight wide streets, and that he, first of all architects, made provision for the proper grouping of dwelling-houses and also paid special heed to the combination of the different parts of a town in a harmonious whole, centred round the market-place.

But there seems to be no evidence for the statement sometimes made, that he had any particular liking for either a circular or a semicircular, fan-shaped town-plan.
_Piraeus_ (fig.

2).
Three cities are named as laid out by Hippodamus.

Aristotle tells us that he planned the Piraeus, the port of Athens, with broad straight streets.