Since 2011, the Swiss city of St. Gallen's public hospital KSSG?OKS has been undergoing a comprehensive rebuilding and extension program. Developed by Zurich-based firm Fawad Kazi Architekt in collaboration with the KSSG?OKS planning consortium, the vast undertaking will completely transform the site into a large, coherent building complex by 2029. This third volume of the eventually five-part monograph on this major and hugely demanding urban development project is dedicated to Haus 07A, the largest of the new buildings, which gives the entire complex a new urban face. A high-rise that mainly hosts the hospital's wards is founded on a three-story elongated base with a spacious public roof terrace and including also the main entrance to the entire hospital complex. Text in English and German. AUTHORS: Marko Sauer is an architect and co-director of the Swiss city of Wil SG's building construction department. He also works as a freelance author and publicist. Christoph Wieser is an architect, publicist, researcher, and a lecturer at the University of Applied Sciences and Arts Northwestern Switzerland's School of Architecture, Construction and Geomatics in Muttenz near Basel. SELLING POINTS: . The comprehensive rebuilding and extension of the KSSG?OKS hospital complex in the Swiss city of St. Gallen is one of the country's most challenging public health building projects . The new KSSG building Haus 07A is typologically innovative and operationally efficient, and also offers an attractive new public space on its roof terrace . Hospital buildings are among the most important public infrastructures, often forging entire cityscapes 70 colour, 30 b/w illustrations