Georg Aerni is a photographic artist with a particular interest in architecture. Educated as an architect himself, he has been working with the camera on this subject with great precision and consistence for the past fifteen years Paris, Barcelona, Hong Kong, Mumbai and Tokyo: each metropolis is also a zone where mankind's will to create is driving constant change. Aerni documents this change in scrupulously prepared and carefully designed series of images. But also when he focuses on receding glaciers in the Alps, his studies of cages in zoological gardens and of mankind's interventions in nature, the extraordinary carefulness and quality inherent to all of Aerni's work is captivating. It sets his oeuvre in sharp contrast to the quickly done, impromptu photography that has become so widespread in recent years. Sites and Signs is the first comprehensive monograph on Aerni's photographic work. The book presents his complete work with an emphasis on the most recent series. Essays on his work in the context of contemporary photography and on images of architecture and landscape, and a complete catalogue of Aerni's oeuvre so far round out the book.