In your paper investigate the concept of sustainable architecture and what it means in the Swiss and Ticino context. When is architecture truly sustainable? What are the features and materials of sustainable architecture? Which architects set examples in Switzerland? How important is the regional/local context? These are some of the questions you should take into consideration.
Make sure to have thesis you are proving in the paper. Consult at least 4 academic sources in order to find your thesis in authored sources.