County Meath, Province of Leinster, Ireland
The Dunboyne Castle Hotel & Spa is located about half an hour northwest of Dublin's city center. The historic property -- an 18th-century castle turned Georgian house, turned convent, turned hotel -- sits on beautiful green grounds, making it a popular spot for weddings and events. The biggest highlight here is the spa, with its serene hydrotherapy pool, outdoor hot tub, and variety of treatments. A lovely lobby has plush seating and a fireplace, and the fitness room is adequate. The location may be out of the way, but with a library, restaurant, three bars, and several golf courses nearby, there is plenty to keep guests entertained.