Engineering and creation of the stone floor covering of the Redipuglia Memorial. The World War I Memorial project, "Casa della III Armata", or House of the Third Army, in Redipuglia began to take shape with the reconfiguration of the external spaces at the foot of Sant'Elia Hill overlooking the great Military Memorial. The centre of the outer area's composition is a 20-metre per side, square-shaped multi-coloured stone floor covering made with stones from all the municipalities of Italy. The 8,047 stones, one for each municipality in Italy, are assembled in a geometric pattern of deconstructed, square-shaped triangles which was inspired by the stone decorations made using the opus sectile technique that had been redeveloped in the early 1900s by the Bauhaus School.The stones of the floor covering were specifically selected thanks to their suitable characteristics for use in outdoor pavement. The stones of the individual municipalities come from the mining areas of the regions the municipalities belong to, except for the stones which did not have suitable characteristics for outdoor pavement. The result is a list of 130 different types of stones including granite, marble and natural stones, representing all the regions of Italy. Particular attention was also devoted to the definitive design and its predominantly clear and predominantly dark stones next to each other, and a sufficient number of stones were chosen to allow each region to have a adequate variety in order to achieve the project's design.