The Grand Harbour, also known as the Port of Marsa, is a natural harbour on the island of Malta. It has been substantially modified over the years with extensive docks, wharves, and fortifications. The harbour mouth faces north-east and is bounded to the north by Saint Elmo Point and further sheltered by an isolated breakwater and is bounded to the south by …The Grand Harbour, also known as the Port of Marsa, is a natural harbour on the island of Malta. It has been substantially modified over the years with extensive docks, wharves, and fortifications. The harbour mouth faces north-east and is bounded to the north by Saint Elmo Point and further sheltered by an isolated breakwater and is bounded to the south by Ricasoli Point. Its north-western shore is formed by the Sciberras peninsula, which is largely covered by the city of Valletta and its suburb Floriana. This peninsula also divides Grand Harbour from a second parallel natural harbour, Marsamxett Harbour. The main waterway of Grand Harbour continues inland almost to Marsa. The southeastern shore of the harbour is formed by a number of inlets and headlands, principally Rinella Creek, Kalkara Creek, Dockyard Creek, and French Creek, which are covered by Kalkara and the Three Cities: Cospicua, Vittoriosa, and Senglea. The harbour has been described as Malta's greatest geographic asset.