The daily life of the Indus valley civilization that flourished between 3000-2500 BC can be traced from the remains of the ancient sites of the Harappa and Mohenjodaro cities that were discovered by the archaeologists in 1922. In these cities, houses were found to be made of baked brick and the houses had flat roofs. The houses were single or double storied with courtyard having well and bathrooms. The cities had streets with well-connected drainage system. It had a large central storage building for grain. The discovery of public swimming pool leads to infer that religious bathing was common during that time. The smaller rooms and pools were dressing rooms and private baths for the important people of the town.