It is a planned city built in the 1980s, to serve the region's oil industry. It is, from all of Santiago do Cacém's parishes, the one nearer to the sea and it is surrounded as follows: to the North, by Melides; to the West, by the Atlantic Ocean; to the East, by Santiago do Cacém and Santa Cruz; and to the South, by Sines. It is one of the youngest cities in the world with approximately two years as a city and 30 years since it was founded. It is mostly a residential suburb for the industrial city of Sines, from which is about 10 miles.