The SIA – Tage, or SIA days, is a unique exhibition of contemporary architecture and civil engineering at various locations across Switzerland. The exhibition offers the public an exceptional chance to comprehend the value of architecture and grasp the ideas behind a building. The SIA is the Swiss Society of Engineers ad Architects and has around 15,000 members in its interdisciplinary network. The society advocates top quality architecture and aspires to create a sustainable and high-quality Swiss habitat. Four professional branches work together to achieve this: architecture, civil engineering, technology and environment.