Sydney’s southern suburbs began surrounding it in the first half of the 20th century, although much of its shoreline is industrial, including major oil refineries, warehouses, factories and Kingsford Smith International Airport with runways reaching out into the bay. | Sydney’s southern suburbs began surrounding it in the first half of the 20th century, although much of its shoreline is industrial, including major oil refineries, warehouses, factories and Kingsford Smith International Airport with runways reaching out into the bay. |