A small structure known as Prince Charles's Castle, or La Favorite, located near the end of the Lunéville Castle park, has been in a state of disrepair for many years. The castle was sold by the local government to a private individual in 1999 and has been abandoned ever since. Despite its poor condition, the building had potential for restoration, especially its grand hall, which once featured impressive decorations. In 2010, the situation drew public attention, and the following year, the structure was officially recognized as a historical monument. However, no major efforts were made to improve its condition. In 2014, the Lunéville Museum acquired a portrait of Charles Alexandre de Lorraine, a historical figure associated with the castle. Meanwhile, La Favorite continued to fall into worse condition. Emergency repairs were carried out by the DRAC, a French government agency responsible for cultural heritage, to make the building watertight and seal its entrances to prevent unauthorized occupation. Despite these efforts, no further restoration work was undertaken. A visit to Lunéville in 2021 revealed that the castle was still deteriorating, even though protective covers had been placed on the roof several years earlier. The article noted that while the castle is now classified as a historical monument and has been abandoned by its previous owner, the French Ministry of Culture has the authority to mandate its restoration if necessary. This highlights a gap between legal protections and actual preservation efforts for historic sites. The situation at La Favorite raises questions about the enforcement of cultural heritage laws and the responsibility of government agencies in maintaining historical landmarks. While the classification of the castle as a historical monument offers some level of protection, the lack of substantial restoration efforts underscores the challenges faced in preserving such sites. The case of Prince Charles's Castle serves as a reminder of the importance of active preservation and the need for coordinated efforts between local authorities and national heritage bodies.