One of the largest walled parks in Europe, 1,750 acre Phoenix Park is home to both a herd of wild Fallow deer and the presidential residence, Áras an Uachtaráin. The Dublin Zoo, the 3rd oldest in the world, is here, along with 5,000 years of history on display at the Ashtown Castle Visitor Centre. Picnic before the massive stone tower at Wellington Monument or explore the Magazine Fort ruins.
