The realization of the 23rd IFHE Congress, from October 13th to 16th, 2014, in Buenos Aires, Argentina, was an old wish of the Argentine Association of Hospital Architecture and Engineering (AADAIH), not only of its present members but also of earlier members, among them the fellow founders. The high-level scientific programme, with 72 from its 80 oral presentations, is now available for all the interested professionals, those that participated in Buenos Aires and those that could not attend. Prof. Romano Del Nord and TESIS Inter-University Research Centre from the University of Florence, Italy made possible the publication of this book.