The term 'Holy Shroud City' refers to the city of Turin, Italy. Turin is a major city in the Piedmont region of northwest Italy and is known for its historical and cultural significance. It is home to the famous Shroud of Turin, believed by many to be the burial cloth of Jesus Christ. The Shroud of Turin is kept in the Cathedral of Saint John the Baptist in Turin and is a major pilgrimage site for Christians. Turin is also known for its architecture, art galleries, and museums.