This paper reviews the virtual reality techniques. Virtual Reality is a computer system used to create an artificial world in which the user has the impression of being in that world and with the ability to navigate through the world and manipulate objects in the world. Virtual Reality (VR) is a term that applies to computer simulated environments that can simulate physical presence in places in the real world, as well as in imaginary worlds. Most current virtual reality environments are primarily visual experiences, displayed either on a computer screen or through special stereoscopic displays, but some simulations include additional sensory information, such as sound through speakers or headphones. Some advanced, haptic systems now include tactile information, generally known as force feedback, in medical and gaming applications. Virtual reality is used to describe a wide variety of applications commonly associated with immersive, highly visual, 3D environments. The development of CAD software, graphics hardware acceleration, and head mounted displays, database gloves, and miniaturization have helped popularize the notion. People often identify VR with head mounted displays and data suits. This paper review about Impact, Heritage and archaeology, Implementation and technologies used in Virtual reality are carried out.