Glenveagh National Park is the second largest national park out of six in Ireland encompassing some 16,000 acres in the heart of the Derryveagh Mountains. Glenveagh Castle, within this park, is a 19th-century castellated mansion and was built between 1867 and 1873. Its construction in a remote mountain setting was inspired by the Victorian idyll of a romantic highland retreat. It was designed by John Townsend Trench, cousin of its builder and first owner, John George Adair, with whom he had been raised in Co. Laois. There is a large range of routes for all walking capabilities in which you are free to explore in this park.