Conservatories emerged in the early 19th century as a result of an increased interest in horticulture as well as developments in glass and iron manufacture, and in methods of heating. These technical innovations led to a new type of glasshouse with greater levels of light and more efficiently regulated heat, rendering them more equipped to house permanent displays of plants and flowers. Conservatories thus became a more agreeable place in which to spend time and so they began to be attached to the house in order to be used as a social space. Drawing on contemporary architects' plans,...