Glenarm Castle is the ancestral estate of the Earls of Antrim, serving as the historic home of the McDonnell family in County Antrim. The estate encompasses an award-winning walled garden, woodland walks, and heritage facilities including the Antrim McDonnell Heritage Centre. Visitors can explore guided castle tours, enjoy afternoon tea, and wander through landscaped grounds featuring a conservatory and arboretum. The property offers diverse family-friendly activities including woodland adventure play areas, dog park facilities, and dining options, making it a comprehensive destination combining castle heritage with contemporary hospitality and outdoor recreation.