Orvieto,  Basilica Cathedral of Santa Maria Assunta (or Duomo), the interior, the Chapel of the Corporale: frescoes by Ugolino di Prete Ilario and others. (1357-64). Detail.Consistently with the destination of the Chapel, the iconographic program of the cycle has as its object not only the episodes of the Bolsena Mass, but in general the mystery of Transubstantiation. In fact, in addition to the miracle of Bolsena, several other prodigies are depicted - mostly they are episodes taken from exempla developed with a didactic purpose - which would demonstrate the real presence of the body of Christ in the consecrated Particola. Complete the decoration scenes of the Passion of Christ and in particular the representation of the Last Supper, precisely the institution of the Eucharist.