Installation, performance, and video art expand the boundaries of the visual arts into space, time, and sensory experience. Rooted in conceptual and postmodern practices, these mediums privilege process, presence, and audience interaction. Whether through immersive environments, embodied actions, or time-based media, artists address contemporary concerns and disrupt passive viewing. These practices challenge traditional objecthood, emphasising art as experience, event, and encounter while exposing the ephemeral nature of viewer experience.