Gosford Castle is situated in Gosford, a townland of Markethill, County Armagh, Northern Ireland, close to the border with County Down. Construction of the castle began in 1819 and finished in the 1850s. It was commissioned by Archibald Acheson, 2nd Earl of Gosford and the architect was Thomas Hopper, one of the leading London architects of the first half of the 19th century. It is the largest Grade A listed building in Northern Ireland.
The castle is at the heart of a lovely park, which is well worth visiting. Several walking trails take you past though park, woodlands and gardens. There is a very well kept arboretum and the many animals in the park include a herd of red deer, long horn cattle, rare breeds of sheep and poultry, peacocks and wonderfully huge and gentle draught horses. There is a picnic area and a campsite, and for those who would like a night in the open air it is a very fine place to pitch a tent.