The document provides a history of cities in ancient India, beginning with the Indus Valley Civilization from 3000 BC. Two major cities, Harappa and Mohenjo-Daro, had sophisticated urban planning with organized streets and drainage systems. During the Vedic period after 1500 BC, Aryan invaders established villages with thatch huts. Ancient texts like Sthapatya Veda and Vaastu Shastras provided guidance on city planning principles. Under the Mauryan Empire in the 3rd century BC, the capital Patliputra was laid out on a grid plan with defensive walls and infrastructure.