At first glance, the Dujiangyan Zhongshuge bookshop in Chengdu looks like a cathedral. The two-story book temple has around 80,000 books for sale. It was designed by the Shanghai architecture firm X+Living. But not everything here is real: Printed foil on the upper shelves gives the illusion of a row of book spines. The architects explain that real books would not only be difficult to reach at this height, but also difficult to keep in good condition.