The Republic of Ireland is divided into 30 administrative regions, mostly tied to the 26 constituent counties (county Tipperary is divided in two and county Dublin in four).
In County Dublin, part of the province of Leinster, Dublin lies nestled around the mouth of the river Liffey and Dublin Bay on Ireland's east coast.
Ireland is an island in northwest Europe in the north Atlantic Ocean whose main geographical features include low central plains surrounded by a ring of coastal mountains.