A sunroom, sun parlor, sun porch, or sun lounge is a structure, usually constructed onto the side of a house, to allow enjoyment of the surrounding landscape while being sheltered from adverse weather conditions such as rain and wind. The concept is popular in the United States, Europe, Canada, Australia, and New Zealand.
In Great Britain, the term conservatory is usually used to refer to a sunroom despite not being used as a greenhouse as traditional conservatories were. However, sunrooms with opaque roofs may be considered distinct from conservatories with transparent or semi-transparent roofs. In general the term conservatory and particularly English conservatory evoke the image of an ornate structure, echoing the traditions of the Victorian era of conservatory building.