Important book of photographs that document the relationship of Pisa and its Province with its waters (rivers, sea, lakes, hot springs). The book is based on a broad selection of historical photos, most of which never before published, from the Alinari Archives and the Fratelli Alinari Museum of the History of Photography, together with a new photographic campaign, planned with this book in mind. A total of 200 photographs present an interesting comparison between yesterday and today, between the 1800s and the 1900s, between past and present activities relating to the river and the sea. They also provide a picture of how these territories have been transformed in the course of the years. The photographs bring back many memories: the places immortalized before the destruction of the war, the floods, river transportation…Included also various "oddities" such as the first silver daguerreotypes of Piazza del Duomo, or the same square flooded, the Arno frozen over and a curious picture of Victor Emmanuel III as photographer on the estate of San Rossore. The book also serves to call attention to what a precious asset water is, insofar as it is a "depletable resource", so that we may reflect on the equitable and discerning use of water that characterized the past when compared with the industrial and domestic wastefulness of modern society.