Eric Broug has produced an outstanding book. It combines art, art history, geometry and mathematics. I was primarily interested in this book purely because of the patterns and how I might use them for my own interests - it was mainly for the CD (which itself is a great asset - works on my Mac fine).
It's a very interesting read and the real patterns & photos from real buildings makes the book much more enjoyable.
I remember as a boy the pleasure derived in constructing shapes and patterns - this brought it all back and then some.
The overall style of the book is very clear and concise, like the patterns themselves.