Architectural visualization is one of the most popular usages of modern computer visualization hardware/software. Visualization technology allows architects to build their designs in 3D and freely navigate them in an immersive environment. This gives them the feeling of being really inside these places. It's also possible to test how light works and make critical design changes accordingly. Archeologists can also use the technology to reconstruct buildings that no more exists. Users and navigate and interact with the environment completely liberated from gravity constraints which gives complete freedom in exploring the finest details even those no easily reachable in reality.