The words “back to school” may fill some with dread. But for grown-up travelers, the phrase has a new (and stress-free) meaning. Globe-trotters looking for lodging with history and personality are finding the perfect retreat at luxury hotels that are former schools and universities. From a 15th-century estate and former girls school in Gloucestershire, England, to a converted 19th-century school in Amsterdam, these European hotels showcase spectacular architecture and unique design and give guests the opportunity to wander through hallowed halls without having to hit the books. These five properties—in England, Ireland, Amsterdam, Germany, and Italy—have character, luxurious amenities, and, we promise, absolutely no tests. Whether you’re looking for a country escape or an urban adventure, these former homes of academia offer unique experiences with the easiest possible admissions process (just make a reservation).