Ireland is an island nation in the Atlantic Ocean, separated from Britain on the east by the Irish Sea. Nicknamed the Emerald Isle for its well-watered grasslands, the country is known for its rich cultural traditions, lively pub scene and its struggles for independence. Ireland has been largely influenced by the Celtic tribes who reached Ireland around the 6th century B.C. In the following centuries the country endured invasions by the Vikings, Normans and British, all contributing to the history and culture we see today. The wit and hospitality of the locals are renowned together with Irish music and pubs.