Clare Valley is an Australian Geographical Indication (AGI - similar to the European Designation of Origin system) wine region to the north of Adelaide, in the Mount Lofty Ranges Wine Zone, South Australia, Australia. The Clare Valley (technically a series of valleys) enjoys mainly cool nights and mornings. This combined with altitudes ranging between 400m - 500m provides growing conditions ideally suited to Riesling, Shiraz and Cabernet. Riesling generally performs best on cooler east-facing sites with powerful Shiraz and Cabernet examples coming from west-facing locales. Clare Valley Riesling is recognised as one of the world's classic regional varietal combinations and is mostly made in a crisp, bone dry style. Subregional examples from Watervale and Polish Hill River showcase the finesse and diversity the region is capable of.