This is a book that I am writing together with two friends of mine. It´s actually more than just a book, it´s a geometric puzzle and an accompaigning guide that reveals what´s behind the Patterns of the Islamic world. It teaches you about their history, their meaning and, most importantly, how to construct them with compass and ruler. The "Secrets" will be revealed in mid 2017. More information can be found on the publisher´s website.