The title of first town planner can be given to Hippodamus of Miletus, also mentioned by the Romans as Hippodamus Milesius. He lived in the 5th century B.C. and was the first to theorize about urban planning. He suggested the new Greek urban form: the grid plan with wide roads intersecting at right angles, a central marketplace, and the grouping of public buildings to form the civic center. Hippodamus' ideas about urban planning were highly influential in the design of new towns and cities in ancient Greece and beyond. Examples of early hippodamian grids are Priene, Mileto, Paestum, Olynthus, Piraeus and Rhodes.