<P> Installation art is an artistic genre of three - dimensional works that often are site - specific and designed to transform the perception of a space . Generally, the term is applied to interior spaces, whereas exterior interventions are often called public art, land art or intervention art; however, the boundaries between these terms overlap . </P> <P> Installation art can be either temporary or permanent . Installation artworks have been constructed in exhibition spaces such as museums and galleries, as well as public and private spaces . 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 . Artistic collectives such as the Exhibition Lab at New York's American Museum of Natural History created environments to showcase the natural world in as realistic a medium as possible . Likewise, Walt Disney Imagineering employed a similar philosophy when designing the multiple immersive spaces for Disneyland in 1955 . Since its acceptance as a separate discipline, a number of institutions focusing on Installation art were created . These included the Mattress Factory, Pittsburgh, the Museum of Installation in London, and the Fairy Doors of Ann Arbor, MI, among others . </P> <P> Installation art came to prominence in the 1970s but its roots can be identified in earlier artists such as Marcel Duchamp and his use of the readymade and Kurt Schwitters' Merz art objects, rather than more traditional craft based sculpture . The "intention" of the artist is paramount in much later installation art whose roots lie in the conceptual art of the 1960s . This again is a departure from traditional sculpture which places its focus on form . Early non-Western installation art includes events staged by the Gutai group in Japan starting in 1954, which influenced American installation pioneers like Allan Kaprow . Wolf Vostell shows his installation 6 TV Dé - coll / age in 1963 at the Smolin Gallery in New York . </P> <P> Installation as nomenclature for a specific form of art came into use fairly recently; its first use as documented by the Oxford English Dictionary was in 1969 . 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 . Allan Kaprow used the term "Environment" in 1958 (Kaprow 6) to describe his transformed indoor spaces; this later joined such terms as "project art" and "temporary art ." </P>

When did the genre of installation art start to gain acceptance