England has a long history, with the Romans invading in the 1st century AD and the Normans taking over in 1066. It is an island country located off the northwestern coast of Europe, bordered by four bodies of water. Its capital and largest city is London, and other major cities include Liverpool and Leeds. The population of England is over 53 million. It has a constitutional monarchy form of government, with Queen Elizabeth II as head of state and David Cameron as Prime Minister. The primary language is English and the official currency is the British pound. Major attractions include the Tower of London, Hyde Park, and the London Eye.