Boîte noire
Black box theaters have their roots in the American avant-garde of the early 20th century. The black box theaters became popular and increasingly widespread in the 1960s as rehearsal spaces. Almost any large room can be transformed into a "black box" with the aid of paint or curtains, making black box theaters an easily accessible option for theater artists. Sets are simple and small and costs are lower, appealing to nonprofit and low-income artists or companies. The black box is also considered by many to be a place where more "pure" theatre can be explored, with the most human and least technical elements in focus.