Established(Constituted) by 3 containers stacked(superimposed) and put down(deposited) in the centre of the site, the Monitoring centre(Observatory) will offer a fantastic view over transformations to come. This device(plan), in free access, results from the will of the actors of the glass site to share with the public stakes which gave birth(rise) to the programme of rehabilitation of the site, the architectural project developed by the toilets(offices) of architecture So-Il and Freaks, as well as the organisation of the construction site(work), which will deeply mark the life of the glass site for coming 3 years.