The San Giovenale Triptych or Cascia Altarpiece is a 1422 painting by Italian Renaissance artist Masaccio, housed in a museum behind the church of Cascia di Reggello, in the Roman Pieve of San Pietro di Cascia near Florence, Italy.This work, discovered in 1961 in a state of poor preservation, in the loft of a house adjacent to the small chapel of San Giovenale two kilometres from Cascia by Juliana Arnetoli.