Barranquilla is a cosmopolitan and primarily industrial city, often visited by businessmen of all nationalities; however the main attraction for tourism is its carnival "Carnaval de Barranquilla," that takes place four days before Ash Wednesday. In November of 2003, UNESCO proclaimed it as one of 28 different "masterpieces of the oral and intangible heritage of humanity". Barranquilla is also called by its residents and Colombians in general "Curramba" (from a language game, in synthesis, Curramba is a reference to "party") and the Golden Gate to Colombia (Puerta de Oro de Colombia), this due to its location on the delta of the Magdalena river, making it the most important commercial sailing port to the Atlantic Ocean for the nation.Residents are known as "Barranquilleros" and are characterized by their outgoing and friendly attitude and relaxed behavior. This makes the average barranquillero an optimistic and open individual, as well as goal-directed and hard-working. http://wikitravel.org/en/Barranquilla