Hello everybody! Today I present you a building that I find quite interesting and appealing from the construction point of view (more than the looks). The Xerox HQ was designed a few years ago, completed in 2001 was one of the first buildings to use prefabricated concrete elements in the country in a quite successful way. These elements provide to the architect the modulation both of the interior space and the façade. The structure follows a pre-fabricated concrete system (heavy weight tectonics) in where the light and fragile modules of windows (construction module developed also by the office) are placed. The building façade transmit sincerity on the way the prefabricated structural elements are used and these ones are the ones that give the internal coherence to the façade. The building seen from the outside its a game of modulation of pre-fabicated elements organized with coherence and with a neat result as we see both in plan and images.