Urban Cities: The Indus civilization flourished around cities. The ruins of the cities, so far unearthed, show remarkable town planning, and excellent system of drainage and sanitation of the Indus Valley Civilization. The city was the heart of the civilization. The life in the Indus cities gives the impression of “a democratic bourgeois economy” like that of ancient Crete.
Large cities divided into two parts: Both at Harappa and Mohenjo-Daro and also at Kalibangan, the city was divided into two main parts. The higher and upper portion of the city was protected by a construction which looks like a fort. The ruling class of the towns perhaps lived in the protected area. The other part of the towns was lower in height than the former and common men lived in this area. The lower area of the towns generally spread over one square mile.