Dublin is the capital of and largest city in Ireland. Dublin is in the province of Leinster on the east coast of Ireland, at the mouth of the River Liffey and bordered on the south by the Wicklow Mountains.
The Republic of Ireland occupies most of the island of Ireland, off the coast of England and Wales. Its capital, Dublin, is the birthplace of writers like Oscar Wilde, and home of Guinness beer. The 9th-century Book of Kells and other illustrated manuscripts are on show in Dublin’s Trinity College Library. Dubbed the "Emerald Isle” for its lush landscape, the country is dotted with castles like medieval Cahir Castle.