The orangery provided a luxurious extension of the normal season of a range of plants, and also to establish other varieties of tender plants, particularly exotics. During the 19-20 centuries, having fruits such as Bananas and Pineapples grown on one's estate to titillate one's guests with was the ultimate in certain social circles! An example of one such fixation was that of growing pineapples, where in Dunmore Park, Scotland, there was built a house especially dedicated to the growth of the pineapple, assisted by furnace driven heating, and fancifully designed with a pineapple-shaped cupola:
The Dunmore Pineapple (Wikipedia commons, attr. Kevin Rae)
The Orangerie at the Palace de Louvre built in 1617, inspired imitations that were eventually trumped by Europe's largest orangery, that of Versailles. It was designed by Jules Hardouin-Mansart for Louis XIV's 3000 orange trees at. It was not until eclipsed by any other glazed building until Joseph Paxton's Crystal Palace:
When first completed in 1664 the classic layout of the superb orange garden designed by Le Notre could be admired by all from the balustrade of the "parterre du Midi" or flower terrace.
The king owed this extraordinary display to Jean-Baptiste de La Quintinie, who had been responsible for the fruit and vegetable gardens on the king's estates since 1670. Las Quintinie was appointed to Versailles in 1661 and between 1678 and 1683 worked with Hardouin-Mansart on the new royal kitchen garden; this gave him the opportunity to experiment with new methods of transplanting, managing, and pruning fruit trees. In winter the orangery, to which the container-grown plants from the various royal residences were brought, housed more than 3,000 trees including oranges, lemons, bays, pomegranates, and thorn apples.
At Willowbrook Park there will be a small orangery, like the one below, situated in the middle of the citrus grove, inside the orchard at the end of an avenue of Crab-apples: