The Port of Lisbon is the third-largest port in Portugal, mainly on the north sides of the Tagus's large natural harbour that opens west, through a short strait, onto the Atlantic Ocean. Each part lies against central parts of the Portuguese capital Lisbon. Due to its strategic site between Europe, Africa, and the Atlantic, it is one of the most accessed and used in Europe. For container ships it begins with a 1080-metre mooring, with cranes, south of a thin, rectangular, pleasure boat marina.