Drawing three different themes together in this number, C3 begins with a survey of seven renovations/restorations of former castles, including AFF architekten's Archive Building in 'Schloss Freudenstein', Freiberg and the Moritzburg Museum Extension by Nieto Sobejano Arquitectos. Secondly, five recent community markets located within urban spaces are reviewed including the Beºiktaº Fish Market Istanbul, the renewed Barceloneta's Market, Barcelona and Sarugaku, Tokyo. Thirdly, ten works and projects by SITU Studio, an unconventional, New York based group, that focus on the experimental uses and applications of technology, material and construction methods are examined. All works and projects are accompanied by texts, technical drawings and photographs.