Twenty-five years ago, an exceptional archaeological discovery took place in the city of Lugo. During the renovation of the Pazo de Montenegro to convert it into the headquarters of the Campus Vice-Rectorate, the remains of a well-preserved Roman domus were found, which contained a mithraeum inside. The find had significant scientific value, as this temple dedicated to the god Mithras is one of the very few known in the Iberian Peninsula and the best preserved, making it an object of study for international research. The Colegio de Fonseca joins the commemorative activities program with the exhibition ‘An Exceptional Find: 25 Years of the Domus of the Mithraeum’. Through 12 panels with photographs, many previously unpublished from the archive of the archaeologist-director C. Rodríguez Cao, the evolution from excavation to musealization will be shown. Visitors will see the complexity of the excavation and restoration of its materials, the research, and the current museum.