So, from the outside, Castle Howard has three major levels: ground, primary, and higher; nevertheless, there is a subterranean cellar area in one wing of the building, as well as an attic floor in the center block. The grounds also contain several other buildings including a coach house, stables, and a gardener's house. Inside the main building are 72 rooms on three floors. The ground floor contains service areas such as pantries, livery stables, storage, and workrooms. The first floor is where most of the guest rooms are located along with a large drawing room, several smaller sitting rooms, and a dining room. The second floor has more private bedrooms and bathrooms, as well as a gallery, study, and two large bedrooms used by members of the family when they visit the castle. There are also three basement levels at Castle Howard. The first is an unfinished storage area, while the second and third comprise a single room with a kitchenette. There are no public access points to any of the basement levels. In conclusion, Castle Howard has three main floors with 72 rooms each. There are also three lower levels with a total space of about 12,000 square feet (1130 square meters).