The Abbey of Monte Oliveto Maggiore is a large Benedictine monastery in the Italian region of Tuscany, 10 km south of Asciano. Its buildings, which are mostly of red brick, are conspicuous against the grey clayey and sandy soil—the crete senesi which give this area of Tuscany its name. It is the mother-house of the Olivetans and the monastery later took the name of Monte Oliveto Maggiore ("the greater") to distinguish it from successive foundations at Florence, San Gimignano, Naples and elsewhere.