In the 1970s, the city embarked on a bold renovation project entrusted to architects Renée Gailhoustet and Jean Renaudie. Today considered as a major architectural work, this ensemble does not go unnoticed in the urban landscape. Combining modernist towers and volumes with sharp angles evoking the shape of stars, it always arouses a certain fascination among visitors and architecture enthusiasts. Presentation of Archistoire, a free augmented tour app.