Social Events 

The estate was established by John Adair, who became infamous for evicting 244 of his tenants and clearing the land so they would not spoil his view of the landscape. The gardens and castle were presented to the Irish nation in 1981 by Henry P. McIlhenny of Philadelphia who had purchased the estate in 1937.

​

The park is home to the largest herd of red deer in Ireland and the formerly extinct golden eagle were reintroduced into the park in 2000.

​

County Donegal is the most mountainous in Ulster consisting chiefly of two ranges of low mountains; the Derryveagh Mountains in the north and the Blue Stack Mountains in the south, with Mount Errigal at 749 metres (2,457 ft) the highest peak. It has a deeply indented coastline forming natural sea loughs, of which both Lough Swilly and Lough Foyle are the most notable. The Slieve League cliffs are the sixth-highest sea cliffs in Europe, while Malin Head is the most northerly point on the island of Ireland.

​

Much of the county is seen as being a bastion of Gaelic culture and the Irish language, the Donegal Gaeltacht (Irish-speaking area) being the second-largest in Ireland. The version of the Irish language spoken in County Donegal is Ulster Irish.