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 west 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.
With its partner harbour of Marsamxett, Grand Harbour lies at the centre of gently rising ground. Development has grown up all around the twin harbours and up the slopes so that the whole bowl is effectively one large conurbation. Much of Malta’s population lives within a three kilometer radius of Floriana. This is now one of the most densely populated areas in Europe. The harbours and the surrounding areas make up Malta’s Northern and Southern Harbour Districts. Together, these districts contain 27 of 68 local councils. They have a population of 213,722 which make up over 47% of the total population of the Maltese islands.