Dunmore Pineapple - The Building

The Building

A building containing a hothouse was built into this wall in 1761 by John Murray, 4th Earl of Dunmore. The hothouse, which was located in the ground floor of the building, was used, among other things, for growing pineapples. The south-facing ground floor, which is now covered in stucco and largely overgrown with vines, was originally covered with glass windowpanes. Additional heat was provided by a furnace-driven heating system that circulated hot air through cavities in the wall construction of the adjoining hothouse buildings. The smoke from the furnace was expelled through four chimneys, cleverly disguised as Grecian urns. The upper floor, which is at ground level when approached from the raised northern lawn, contained two small cottage-like apartments, or "bothies", for the gardeners.

Murray left Scotland after the initial structure had been built, and went on to become Colonial Governor of Virginia in America. The upper-floor pavilion or summerhouse with its pineapple-shaped cupola and the Palladian lower-floor portico on the south side were added after Murray’s return from Virginia.

The building is a mixture of architectural styles. The south (ground floor) entrance takes the form of a characteristically Palladian Serliana archway, incorporating Tuscan columns. Visitors who step through this archway and into the vestibule below the pineapple face an elaborately framed doorway, flanked, on either side, by pairs of painted wooden Ionic columns, carved with great care, which display perfect fluting and even architecturally correct entasis. The keystone of the Serliana arch is inscribed with the date “1761.” This has caused some people to speculate that the pineapple was constructed in 1761, although there is no clear evidence that the archway and the pineapple were built at the same time, or even designed by the same architect. Others suggest that the pineapple was constructed after Murray's return from America in 1776.

Above the Serliana arch is inserted a “later and clumsier,” panel bearing a relief carving of a heart charged with a cinquefoil knot and inscribed with the motto Fidelis in Adversis. The design and motto are taken from the Douglas-Hamilton coat of arms, and probably commemorate the marriage, in 1803, of George Murray, the 5th Earl of Dunmore, to Lady Susan Douglas-Hamilton, daughter of Archibald Hamilton, 9th Duke of Hamilton.

The intricately carved stone pineapple, which is situated between the two bothies, forms an elaborate cupola atop an octagonal pavilion, with sash windows topped with Gothic (or, more accurately, Gothick) ogee arches on seven sides and a door, topped with an ogee transom, on the eighth. The door, on the north side, exits onto the upper level of the garden. Inside the pavilion, the stone walls are gently curved, so that the room is circular rather than octagonal. Even the door and the panes of glass in the seven windows are curved, so as to match the curve of the walls in the room. The pavilion is just large enough to house a round table and some chairs.

The pineapple is around 14 metres high and constitute a stunning example of the stonemason's craft, being a remarkably accurate depiction of a pineapple. Each of the curving stone leaves is separately drained to prevent frost damage, and the "stiff serrated edges of the lowest and topmost leaves and the plum berry-like fruits are all cunningly graded so that water cannot accumulate anywhere, ensuring that frozen trapped water cannot damage the delicate stonework."

Despite the unconventional design and the mix of architectural styles, the effect is harmonious because the pineapple and the portico are made of the same stone (ensuring a single colour from top to bottom) and are of a consistent width. Together, they draw the eye upwards in a single smooth motion. The height of the building, from the bottom of the lower floor to the top of the pineapple, is exactly half the width of the structure. Additionally, the width of the portico and pineapple matches the height of the south façade. Together, these elements, along with the four equally spaced urn-shaped chimneys, add to the sense of Classical order and harmony.

The identity of the designer of the folly is uncertain, but it is often attributed to Sir William Chambers who designed similar fanciful structures at Kew Gardens, and who showed a similarly meticulous attention to detail (including curved panes of glass and chimneys disguised as rooftop urns) in his design for the Casino at Marino, just outside Dublin