This experimental "film" consists of an empty room with a bare lightbulb, and windows covered with a translucent material, for a duration of 24 hours. It is not necessary for visitors to stay for the entire duration - they can come and go as they please. Created by Anthony McCall, it is based on the architectural framing of time and light. It came at the end of a series of works in which McCall was stripping back cinema to its absolute minimum - light, time, and human experience/perception.