Performing arts center/centre (see spelling differences), often abbreviated as PAC, is used to refer to: * A multi-use performance space that is intended for use by various types of the performing arts, including dance, music and theatre. The intended multiple use of performing arts centers in this sense differentiates them from single-purpose concert halls, opera houses or theatres, although the actual use of single-purpose spaces for other than their intended use is, of course, widespread. This sort of space has a long history extending to the Roman Colosseum and Greek amphitheatres. * A cluster of performance spaces, usually but not always under one roof, each possibly designed for a specific purpose such as symphonic music or chamber music or theatre, but multi-purpose as a whole.