Every built structure has an interior: whether it takes the rough form of a rudimentary shelter, the grey walls of a hospital or the finessed decoration of a one-off residence. We spend most of our time inside buildings. Shut your eyes and you will find yourself in your own interior. You will always be inside. Mastering the language, thinking and history of the interior is critical to understanding and designing spaces. This essential primer transcends the boundaries and genres that often define interiors, providing a comprehensive view of the concepts and vocabulary of interior design. Written as an accessible 'treasury' of principal terms and ideas, Inside Information engages with the past, uncovering the future potential of the interior, and its design.