The Centre de Recherche sur la Conservation (CRC) – Laboratoire de Recherche des Monuments Historiques (LRMH) is a French research institution dedicated to the conservation and restoration of cultural heritage. Its stained-glass department focuses on the study, preservation, and restoration of historic stained-glass windows. The department conducts scientific research on materials, techniques, and degradation processes affecting stained glass. It also develops innovative conservation methods and collaborates with other institutions to enhance knowledge and practices in the field. The LRMH is a key player in advancing the preservation of France’s architectural and artistic heritage.