The first vintage of this estate grown Orvieto Classico Castello della Sala to be produced was the 1990 vintage. With the 1997 vintage, the wine became an Orvieto DOC Classico Superiore (the new 'Superiore' denomination came into being the same year). The 'Superiore' denomination specifies that the yields per hectare must be much lower than for normal Orvieto Classico - the grapes are to be harvested only when in an advanced state of maturation, and the wine can be released only after the 1st March following the vintage. The Castello della Sala estate is located 11 miles from the town of Orvieto . The castle is an outstanding example of medieval military architecture, and its extensive vineyards enjoy an ideal micro-climate for the production of cooler weather wines such as whites and Pinot Noir.