A genuinely vast, green expanse where you can cycle, picnic, and get surprisingly close to free-roaming deer right inside the capital. The honest catch: it's so big that without a bike you'll only scratch the surface, the deer are seasonal and not guaranteed, and it's a fair distance from the main sightseeing core.
Its 11km perimeter wall encloses 707 hectares (1,750 acres) — roughly twice the size of New York's Central Park — making it one of Europe's largest enclosed urban parks. · en.wikipedia.org
A herd of wild fallow deer has lived here since the 1660s; the current 400–450 animals descend from that original herd. · phoenixpark.ie