An atrium is a large open space within a building, often featuring a glass roof. It serves as a central gathering area, allowing natural light to illuminate the interior. Atriums are commonly found in commercial buildings, hotels, and some residential designs, enhancing the aesthetic appeal and providing a welcoming atmosphere. In ancient Roman architecture, the atrium was the central room of a house, typically open to the sky. This design allowed for ventilation and light, while also serving as a space for social interaction. Modern atriums continue to fulfill similar functions, promoting connectivity and community within various structures.