Cogoleto is a comune (municipality) in the Province of Genoa in the Italian region Liguria, located about 25 km west of Genoa.
Cogoleto borders the following municipalities: Arenzano, Sassello, Varazze.
The Province of Genoa (It. Provincia di Genova) is a province in the Liguria region of Italy. Its capital is the city of Genoa.
It has an area of 1,838 km², and a total population of 890,863 (2006). There are 67 communes in the province (source: Italian institute of statistics Istat, see this link).
Named after a mythical two-headed Greek God, Janus, protector of ships, obviously due to the fact of its important role as a maritime center. The name derives from a Ligurian tribal word, for "knee" (genu), or the Latin name for gate, "janua".