An atrium is an interior court on to which rooms open. The atrium has become an almost universal feature of commercial buildings. Occasionally, the incorporation of an atrium can transform existing buildings.
Although much of the appeal of atria lies in their aesthetic attributes, they have the practical advantage of bringing natural light and ventilation often deep into a building.
The shape and form of the atrium also has an important effect on the availability of natural lighting in the spaces adjacent to the atrium. Several factors need to be considered: