Like that of most architectural compositions of Mr Nash, the general effect of Killymoon is at once imposing and picturesque. Its form is that of a parallelogram; the north and east sides, which are the principal architectural fronts, and contain the chief apartments, being but little broken in their surfaces, and forming two sides of the square; while the remaining sides, which contain the offices, are of an irregular ground-plan, and are much hidden by trees. The east, or principal front, which is that represented in our wood-cut, has a large circular tower nearly at its centre, and is terminated at its northern angle by an octagon tower of inferior height, but otherwise equal dimensions; and the north front, extending from the octagon tower above mentioned, has a square tower at its west extremity, with which is connected, in a nearly continuous line, a structure in the style of a Gothic chapel, having stained glass windows, and buttresses intervening, and a belfry at its western termination: this portion of the building, however, is used as a library, and is the only part remaining of the original mansion which existed on the estate when the ancestor of Colonel Stewart purchased it from the Earl of Tyrone, and which was subsequently destroyed by an accidental fire. The north or entrance front is adorned with a porch leading into a small vestibule, and thence into the hall, which is of great size, and is terminated by a stone staircase having two return flights leading to a corridor which communicates with the bed-chambers. This hall also communicates by doors with the several portions of the building below, those on the west side leading to the servants’ rooms, and those on the east to the state apartments, which consist of a breakfast parlour, dining-room, ante-room, and drawing-room, all of which are of noble proportions, and their woodwork of polished oak.