Around 2500 BC, the people of the Indus Valley built huge cities including Mohenjodaro in the south and Harappa in the north.
These cities were well planned. The buildings were constructed with mud-bricks. A proper drainage system and water storage system were some of the main features of these cities.
Each city was divided into two areas. One area was where the people lived. Houses were arranged in rows along straight streets. Most houses had a well for water, in the courtyard and hygienic toilets.
The city’s other half was a walled area containing huge public buildings like granaries, public halls, great bath etc. Near the granaries were threshing floors, where farmers from villages threshed their grains. The other important Indus Valley cities were Lothal, Dholavira, Sutkagendor, Surkotada and Banawali.