The Barossa Valley in Australia is one of the New World's most interesting wine regions, having been established in the late 19th century by German settlers. The region benefits enormously from the relatively temperate climate, which ranges from being hot on the lower parts of the valley, to quite cool as the altitude increases on the valley slopes. Barossa Valley produces mostly Shiraz wines, and has become one of the key Australian regions for this distinctive grape varietal which has gone on to be a major grape for the Australian wine industry. Despite suffering from a poor reputation in the mid 20th century, by the 1980s, plenty of unique and forward-thinking wineries set up in Barossa to take advantage of its excellent climate, and set about producing the excellent red and white wines which the region is famed for today. Although primarily associated with the Rhone region of France, the precise origins of the Viognier grape variety are unknown, and the subject of much debate. However, these fine and delicate green skinned grapes are an important varietal for many of France's most elegant white wines, and they are quickly beginning to spread around the New World, too, where wineries are discovering their unique qualities and unusual character. Viognier grapes are notoriously difficult to grow, due to the fact they are highly susceptible to mildew, but wineries persevere with them nonetheless, producing wines which are highly aromatic and have a great, fruit-forward character. Their delicate aroma suggests sweetness due to its flowery, sappy nature, but the wine itself generally very dry and crisp, and full of summery, light and refined qualities.