The genre incorporates a broad range of everyday and natural materials, which are often chosen for their "evocative" qualities, as well as new media such as video, sound, performance, immersive virtual reality and the internet.
Many installations are site-specific in that they are designed to exist only in the space for which they were created, appealing to qualities evident in a three-dimensional immersive medium.
These included the Mattress Factory, Pittsburgh, the Museum of Installation in London, and the Fairy Doors of Ann Arbor, MI, among others.
It was coined in this context, in reference to a form of art that had arguably existed since prehistory but was not regarded as a discrete category until the mid-twentieth century.
Essentially, installation/environmental art takes into account a broader sensory experience, rather than floating framed points of focus on a "neutral" wall or displaying isolated objects (literally) on a pedestal.
The conscious act of artistically addressing all the senses with regard to a total experience made a resounding debut in 1849 when Richard Wagner conceived of a Gesamtkunstwerk, or an operatic work for the stage that drew inspiration from ancient Greek theater in its inclusion of all the major art forms: painting, writing, music, etc.
In the book "Themes in Contemporary Art", it is suggested that "installations in the 1980s and 1990s were increasingly characterized by networks of operations involving the interaction among complex architectural settings, environmental sites and extensive use of everyday objects in ordinary contexts.
What is common to nearly all installation art is a consideration of the experience in toto and the problems it may present, namely the constant conflict between disinterested criticism and sympathetic involvement.
In effect, the entire installation adopts the character of the simulacrum or flawed statue: it neglects any ideal form in favor of optimizing its direct appearance to the observer.