Shaken up by the digital age, with its multiplying media and representation systems, sacred and historic libraries, 20th-century Documentation and Information Centres (CDI) and contemporary knowledge centres are faced with the dematerialisation of knowledge transmission. These kinds of places are struggling to meet the specific needs of architecture and design teaching institutions. This “applied” knowledge requires a place of knowledge as universal as it is cross-disciplinary. Often buried in invisible storage, intangible, how can we shape and “spatialise” the knowledge, understanding and skills of an architectural project? The Arena organises the corpus, enhancing its transmission and promoting its memory.