Sanctuary of San Besso

The present Aosta Cathedral was built in the 11th century, probably at the request of Bishop Anselmo (994-1025), and was probably designed in the Nordic style, inspired by the main church complexes of the Germanic Empire in the Ottonian period. During the 12th and 13th centuries, the church underwent transformations and embellishments. In the 15th century, the church was completely transformed, especially inside (burial chapel, sanctuary, choir). At the end of the 15th century and the beginning of the 16th century, a series of works on the body of the building gave it the appearance it still has today, such as the Renaissance-style façade built between 1522 and 1526.

Biella Cathedral was built from 1402 to the 19th century on the site of a former 11th-century church. The cathedral was inaugurated in 1402 to honour a vow made by the population following the plague of 1399. In 1772 Santa Maria Maggiore was chosen as the cathedral of the new diocese of Biella and was completely restructured in the neo-gothic style by Ignazio Antonio Giulio.

The Great St Bernard Hospice, situated at an altitude of 2,473 metres, was supposedly first built around 1050, when Saint Bernard of Aosta founded the hospice which will later bear his name. In 1823, the hospice is rebuilt under the direction of the architect Henri Perregaux. It was at the hospice that was created the so-called dog breed of St. Bernard.