Designed to be a sort of tribute to the history of the oldest diocese in Piedmont, the museum is located on the ground floor of the Archbishop’s Residence. It houses pieces that belong to the Chapter Treasure of the Vercelli Cathedral. They are arranged in chronological order to illustrate both the history of evangelisation efforts and the development of artistic techniques. Among the most important pieces there is a faithful copy of the crucifix (an extraordinary piece from Ottonian times), an ancient parchment scroll depicting scenes from the acts of the Apostles, different types of reliquaries, and the facsimile of the world-famous Vercelli Book (10th century), which is one of the first manuscripts to be written in old English.