Punta Alta is a city in Argentina, about 20 kilometers southeast of Bahía Blanca. It has a population of 57,296. It is the capital ("cabecera") of the Coronel Rosales Partido. It was founded on 2 July 1898.The city is located near the Atlantic Ocean, neighbouring the Puerto Belgrano naval base, which is home to the Argentine Naval fleet. The activities revolve around the Puerto Belgrano Naval Base, the largest of Argentina.