Phoenix Park 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 ; it is one of the largest enclosed recreational spaces within any European capital city. It includes large areas of grassland and tree-lined avenues, and since the 17th century has been home to a herd of wild fallow deer. The English name comes from the Irish fionn uisce meaning "clear water". The Irish Government is lobbying UNESCO to have the park designated as a world heritage site.