What is the fine-grained topic of the following text: Written by Prof. François Höpflinger (Professor Emeritus of the University of Zurich), Sibylle Omlin (former Director of the École Cantonale d'Art du Valais, Sierre) and BGP, they are dealing with the changing age, architecture and art and construction. Only return the topic.
The changing age, architecture, art and construction.