Installation art is a three-dimensional art form that involves the configuration of objects in a space to transform the viewer’s perception of that space. Installation art is different from traditional art forms because it’s a unified experience that engages the viewer in multiple ways, often across multiple senses:

Immersive: Installation art is designed to be experienced by the viewer, who is invited to step inside and interact with the artwork.

Site-specific: Installation art is often created for a specific place or for a temporary period of time.

Multi-sensory: Installation art can engage the viewer’s senses of touch, sound, and smell, in addition to sight.

Mixed media: Installation art can include a variety of media, such as painting, sculpture, found objects, drawing, and text.

Large scale: Installation art is often large scale and can occupy an entire room or gallery space.

Installation art became prominent in the 1970s. The idea for installation art originated with German artist Kurt Schwitters, who built a house where everything in the house was part of the artwork. (Google)