Chennai architecture is a confluence of many architectural styles. From ancient Tamil temples built by the Pallavas, to the Indo-Saracenic style (pioneered in Madras) of the colonial era, to 20th-century steel and chrome of skyscrapers. Chennai has a colonial core in the port area, surrounded by progressively newer areas as one travels away from the port, punctuated with old temples, churches and mosques.
As of 2014, Chennai city, within its corporation limits covering 426 sq km, has about 625,000 buildings, of which about 35,000 are multi-storied (with four and more floors). Of these, nearly 19,000 are designated as commercial ones.[1]