A Theory of Architecture is a book on architecture by Nikos Salingaros, published in 2006 by Umbau-Verlag, Solingen, Germany . Cover recommendations are by Kenneth G. Masden II, Duncan G. Stroik, Michael Blowhard, and Dean A. Dykstra. Preface by Prince Charles, and Foreword by Kenneth G. Masden II. This book is a re-working of previously published articles used to teach a senior architecture studio class. Four of the twelve chapters were originally written in collaboration, and the co-authors include Michael Mehaffy, Terry Mikiten, Debora Tejada, and Hing-Sing Yu. Originality This book joins a recent movement to explain socio-cultural phenomena by means of scientific models. Writers who have spearheaded this general effort by writing popular science with serious implications include Richard Dawkins, Steven Pinker, and Edward Osborne Wilson. Ever since Benoit Mandelbrot mentioned that traditional architecture was more intrinsically fractal than 20th century buildings, people have been intrigued about the possibility of understanding architectural form in mathematical terms. The fractal nature of natural structures is evident in topography, and people have noticed that traditional architecture blends better with the landscape. Salingaros builds upon Christopher Alexander’s work, including Notes on the Synthesis of Form, A Pattern Language, and The Nature of Order. Salingaros has collaborated with Alexander for many years, and was one of the editors of "The Nature of Order". He proposes mathematical laws of scaling, argues for an essential role for fractals in architecture, and describes rules for coherence among subdivisions that can help produce a more pleasing design. He claims that these are, in effect, original aesthetic rules coming from science rather than from any traditional artistic sources. Yet, like Alexander, Salingaros argues that this design theory corresponds more closely to what humans have evolved to appreciate. The book introduces many innovative science-based ways of approaching design, and opposes abstract or formal methods based on imageability. Influence Prince Charles wrote the Preface to the book, declaring Salingaros to be “an intriguing, perhaps historically important, new thinker”. The book is not about Classical architecture. Like Prince Charles, Salingaros is an admirer of Islamic architecture, and the design theory he presents is claimed to be equally valid for Classical, Islamic, or any other vernacular or traditional architecture. Salingaros’ book presents a different view of architecture and design from the teaching texts used for courses in architecture schools during the past several decades. He criticizes present-day architectural education for continuing to rely