Visakhapatnam (also known as Vizag, Viśākha or Wāltair) is the executive capital of the Indian state of Andhra Pradesh. It is also the most populated and largest city of Andhra Pradesh. It lies between the Eastern Ghats and the coast of the Bay of Bengal. It is the third largest city in the east coast of India after Chennai and Kolkata and the fourth largest city in South India. It is one of the four smart cities of Andhra Pradesh selected under Smart Cities Mission. Serving as the headquarters of its eponymous district, it is the most populous city in the state. With an estimated output of $43.5billion, the city is the ninth largest contributor to India's overall gross domestic product as of 2016. Visakhapatnam serves as the headquarters for the Eastern Naval Command.