The area was the scene of much of the fighting in the Great Siege of Malta of 1565 when the Ottomans attempted to eject the Order of St John but were ultimately defeated. After the siege, the capital city of Valletta was built on the Sciberras peninsula on the north west shore of the harbour. Over the years, more fortifications and settlements were founded within the Grand Harbour, including Fort Ricasoli and the towns of Floriana and Cospicua.