Phoenix Park (Irish: Páirc an Fhionnuisce) is an urban park in Dublin, Ireland, lying 2–4 km west of the city centre, north of the River Liffey. Its 11 km perimeter wall encloses 707 hectares (1,750 acres), one of the largest walled city parks in Europe. It includes large areas of grassland and tree-lined avenues, and since the seventeenth century has been home to a herd of wild Fallow deer. The English name comes from the Irish fionn uisce meaning "clear water".