Ardgillan Castle and Demesne sits dramatically on an elevated coastline in North County Dublin, overlooking the Irish Sea with views of the Mourne Mountains and nearby Lambay Island. Originally named Prospect House, the castellated country residence was built in 1738 and expanded with east and west wings in the late 1800s. The property encompasses 194 acres of rolling parkland with mixed woodland, formal walled gardens, rose gardens, and Victorian glasshouses. Acquired by Fingal County Council in 1981, the castle now operates as a cultural venue offering guided castle tours, an art gallery, open artist studios, a craft shop, and heritage walking trails. Family amenities include a state-of-the-art playground with over 30 pieces of equipment, castle tearooms, and seasonal cultural events featuring traditional music and theatrical performances.