I’ve always wondered what the difference is between an atrium, an orangery and a conservatory? After a little bit of research I discovered an atrium is a large open space within a building, providing light and ventilation to the interior. Modern atriums have glazed roofs and or large windows. An orangery is similar to a greenhouse or a conservatory, and modern orangeries do not bear fruit. So really, if you’re looking to have an extension built to your home, there is no bloody difference between an atrium, an orangery or a conservatory! Just flash your cash and call the ‘extension’ what you damn like!