Location: Ireland Northern Ireland is part of the United Kingdom and lies on the northeastern portion of Ireland's island. It is one of the most popular places for vacationers, and you will visit some of the hottest "must-see" sites that Northern Ireland has to offer. Start your sightseeing in Dublin, Ireland, a member of the European Union and is known for its literary heritage, Georgian architecture, and famous pubs. See the city's sights, including St. Stephen's Green, Trinity College and…