The United Kingdom of Great Britain and Northern Ireland is made up of England, Scotland, Wales and Northern Ireland, is a constitutional monarchy and is one of the 25 member states of the European Union. The UK is surrounded by the Atlantic Ocean, the North Sea, the English Channel and the Irish Sea. Northern Ireland is the only part of the UK with a land border, sharing it with the Republic of Ireland (Eire). Britain is the largest of the British Isles. The second largest is Ireland who meet Northern Ireland and the Republic of Ireland. Offshore of Scotland are the Hebrides archipelago to the west and the Orkney and Shetland to the northeast. Other islands are the coastal islands of Wight, Anglesey and Scilly; the Isle of Man in the Irish Sea and the Channel Islands between Britain and France, are Crown dependencies, lands owned by the British monarch but not part of the United Kingdom. The UK has also fourteen Overseas Territories: Anguilla, British Antarctic Territory, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Gibraltar, Montserrat, St Helena and Dependencies (Ascension Island and Tristan da Cunha), Turks and Caicos Islands, Pitcairn Island, South Georgia and South Sandwich Islands, Sovereign Base Areas on Cyprus.