The Royal Institute of Artistic Heritage, established in 1948, is one of the ten scientific institutions under the jurisdiction of the Federal Minister for Science Policy. It is devoted to the inventory, scientific study, conservation and valorisation of the artistic and cultural goods of the country. With a mission of research and service to the public, it is a unique instrument for the heritage of our country, both movable and immovable. Three departments associate art historians, photographers, chemists, physicists and conservators. The comparison of their observations gives the possibility of collecting reference data and studying the works from various angles: their composition, their evolution, the aging of materials and the means to remedy them. Any restoration treatment will be based on this thorough pre-study. IRPA is the federal scientific institution responsible for documentation, study and conservation-restoration of the cultural and artistic heritage of our country. Art historians, photographers, chemists, archaeologists, engineers and conservators restore advanced interdisciplinary research on materials and techniques used in heritage, and on conservation and restoration products and methods. The IRPA is a unique instrument for the dissemination of scientific, photographic and technical documentation in these fields. 850 people visited the IRPA on March 9, during the Open House! This is 150 more than in March 2016. Our restaurateurs, art historians, chemists, engineers, photographers, etc. were able to share their passion and their knowledge. The 12th volume in our Scientia Artis collection was released in December 2016: Between Carpentry and Joinery. Wood Finishing Work in European Medieval and Modern Architecture Under the direction of Pascale Fraiture, Paulo Charruadas, Patrice Gautier, Mathieu Piavaux and Philipp. The IRPA Laboratories Department gathers ten cells: seven deal with specific materials, two study dating techniques (radiocarbon and dendrochronology) and finally a cell deals with preventive conservation. To study the techniques and materials used for the realization of works of art and their mechanisms of aging, this is the mission of the laboratories. The identification by analysis of the various components makes it possible to determine the specificities and sometimes the authenticity of the works. The laboratories thus contribute to the study prior to any treatment in a workshop of conservation-restoration. The laboratories participate in national and international research projects and regularly publish the results of their work.