Yenra Indoor Atrium with Costumed Attendees Indoor Atrium with Costumed Attendees: An indoor atrium or conservatory within a building, characterized by large windows and a glass roof that allows natural light to flood in. The interior is well-maintained, with neatly trimmed bushes and trees, as well as a brick walkway leading to steps up to the main floor. A few individuals are seated at tables on either side of the atrium, while others stand around the area, some dressed in costumes that suggest they may be attending an event or convention. The overall atmosphere is one of casual socializing and enjoyment, with no apparent signs of distress or discomfort among the people present.