Bridges have always been fascinating to people. They connect places or even worlds, physically or intellectual, made out of steel and concrete or - out of words. This book contains the 153 best photos collected in an Instagram Photo Contest about bridges. It features bridges from all over the world. The challenge took place in summer 2011. All photos were taken and edited with an iPhone and have been published on Instagram, which is both an iPhone App and a community platform for photos. Mobile photography or "iPhonography" is a fast growing new form of art with surprising strength in creativity and diversity.