The book "Aqua" by Beat Presser is dedicated to Switzerland's most precious resource: water. It addresses both liquid water and frozen water in the form of ice, showcasing the stunning beauty of Switzerland's water and ice landscapes. The photographs, taken over several years, provide a unique perspective on the majestic landscapes that feed the sources of significant European rivers such as the Rhine, Rhône, Po, and Inn. This work is not a documentary but an artistic homage to the fascinating elements of water and ice. Many of the depicted landscapes already hold historical value, as they are threatened by climate change and may be lost forever. The large-format panoramic images invite viewers to experience and appreciate the impressive nature of Switzerland.