Alella is a municipality located between the Mediterranean Sea and the coastal mountain range: in a relatively short distance, the orography of the territory rises from the sea level to 400 meters high. Due to this situation, sloping areas were historically organized on terraces stabilized with stonewalls, to be cultivated. The territory outside the urban nucleus was structured by means of large farms, where large houses with different architectural, landscape, social and heritage interests were built in each one of them; those who gave name to each one of the zones that occupied. Subsequently, during the 20th century, the demographic pressure and the change in the economy led to the appearance of several urbanizations that meant the fragmentation of the territory.