The project series documents "Atta Unsar", an installation consisting of the text of the Lord's Prayer, in Old High German, written on the top of the wall around the perimeter of an empty dimly-lit room. The installation was initially presented at the Galleria Schema in Florence in 1973. It represents an " 'imposed education' still recalled even after decades."  The installation was also presented in the exhibition "About non conscious architecture" at the Galleria Giovanni Bonelli in Milan, in 2017, and in the exhibition "Architecture Naturali/Gianni Pettena" at the Kunst Meran in Meran, also in 2017.
The project series contains installation views at the Galleria Schema in Florence, five drawings showing the evolution of the installation design, and correspondence about the project.
 Gianni Pettena website, https://www.giannipettena.it/italiano/opere-1/inst-empty-space-2008/ (last accessed 12 November 2019).