 Next to the Maremagnum area are the "Golondrines", small ships that take tourists for a visit around the port area and beyond.The Barcelona industrial port is to the south and comprises the Zona Franca, a tariff-free industrial park that has developed within the Port of Barcelona, across the flat land of the Llobregat Delta between the city of Barcelona and that of El Prat de Llobregat and the Barcelona International Airport to the south.A good place to view both the industrial and pleasure port is from Montjuïc, and more specifically, from Montjuïc Castle, as well as from the aerial cable car connecting Barceloneta with the Ferry Station and Montjuïc.