Johannes Itten (1888–1967) is one of the protagonists of 20th century art history. He also teached at the Bauhaus in the 1920’s. The exhibition shows how strongly his artistic beginnings were rooted in the city of Thun and how his experience of nature was influenced by Lake Thun and the surrounding area. Starting with his early work, the exhibition presents landscape representations up to his late work, with a series of paintings and drawings that have never been exhibited before. In the Thun landscape, Itten has developed a concept of nature that is fundamental to his art.