Ever since its invention, photography has enjoyed a close and mutually stimulating relationship with architecture - an association underlined by one description of photography as "building with light". So well established is this link that photography is now regarded as the easiest and most reliable means of making architecture and its ideas accessible to a wider public. Our first, sometimes our only, impression of a building often comes from a photograph, and the skilled photographer can help us to see even the most familiar structures with a fresh eye.