








The Cathedral of Santa Maria Assunta and San Giovanni Battista (in French: Cathédrale Notre-Dame de l'Assomption et Saint-Jean Baptiste) is the main place of worship in the city of Aosta, the bishop's seat of the diocese of the same name; it constitutes, together with the Collegiate Church of Sant'Orso, the most important testimony of the history of sacred art in the Aosta Valley. Its ultra-millennial history must be reconstructed through the multiplicity of interventions that have followed one another and the architectural languages used, in addition to the artistic testimonies that it preserves.