orangery

thumb|Glazed roof at Fota House orangery, Fota Island, Ireland thumb|The Orangery Palace|Orangerieschloss built by [[Frederick William IV of Prussia in Potsdam, Germany in the mid-19th century]] thumb|The orangerie of the Royal Castle of Laeken, Belgium (ca.1820), is the oldest part of the monumental [[Royal Greenhouses of Laeken.]]

An orangery or orangerie is a room or dedicated building, historically where orange and other non-hardy fruit trees are protected during the winter, as a large form of greenhouse or conservatory. In the modern day an orangery could refer to either a conservatory or greenhouse built to house fruit trees, or a conservatory or greenhouse meant for another purpose.