Alfonso Femia and Gianluca Peluffo, architects of the Italian agency 5+1AA, with the French architect Jean-Baptiste Pietri are responsible from conception to completion for the new head office of the Foundation of the Fair of Milan on the site of the exhibition park. It joins a programme of reorganisation of the Fair aimed at improving the equipment and service functions and facilties of the site. Such improvements include reduced consumption of water and energy, maximum exploitation of renewable energies, and the well-being of the occupants through improved thermal, acoustic, visual comfort and the strategic provision of open spaces. The utilitarian success of the design combined with the building's close integration and dialogue with surrounding public buildings is a remarkable achievement. This book reflects and considers the progess of the project.