Lesotho is 4,335 times larger than Phoenix Park.
Area: 30,355 km2 World Factbook
Population: 1,942,008 (July 2014) World Factbook
Lesotho, officially the Kingdom of Lesotho, is a landlocked country completely surrounded by South Africa. It is just over 30,000 km² in size and has a population slightly over two million. Its capital and largest city is Maseru. Lesotho is a member of the Commonwealth of Nations. Wikipedia
Area: 7 km2 calculated
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, one of the largest walled city parks in Europe. Wikipedia