Modena Cathedral is a Roman Catholic cathedral in Modena, Italy, dedicated to the Assumption of the Virgin Mary and Saint Geminianus. Formerly the seat of the Diocese, later Archdiocese, of Modena, it has been since 1986 the archiepiscopal seat of the Archdiocese of Modena-Nonantola. Consecrated in 1184, it is an important Romanesque building in Europe and a World Heritage Site.