The Wachau (German pronunciation: [vaˈxaʊ]) is an Austrian valley with a picturesque landscape formed by the Danube river. It is one of the most prominent tourist destinations of Lower Austria, located midway between the towns of Melk and Krems that also attracts "connoisseurs and epicureans" for its high-quality wines. It is 40 kilometres (25 mi) in length and was already settled in prehistoric times. A well-known place and tourist attraction is Dürnstein, where King Richard the Lion-Heart of England was held captive by Duke Leopold V. The architectural elegance of its ancient monasteries (Melk Abbey and Göttweig Abbey), castles and ruins combined with the urban architecture of its towns and villages, and the cultivation of vines as an important agricultural produce are the dominant features of the valley.
The Wachau was inscribed as "Wachau Cultural Landscape" in the UNESCO List of World Heritage Sites in recognition of its architectural and agricultural history, in December 2000.
Wachau is one of Austria's most established and notable wine regions, specializing in dry wines made from Riesling and Grüner Veltliner. Located in Lower Austria along the Danube, west of Vienna and Krems an der Donau, it is one of the western most wine producing regions in Austria with only a few scattered plantings in Tyrol being further west. While most of Austria follows a wine classification systems based on ripeness and harvest must weight that parallels the German wine classification system, Wachau wines have a unique classification system. The three classification levels for Wachau wine include Steinfeder for wines up to 11.5% alcohol level, Federspiel for wines between 11.5–12.5% and Smaragd that must have a minimum of 12.5% alcohol level. Despite its renown, the Wachau is a small wine region that usually accounts for only around 3% of Austria's wine production.
Archeological evidence suggests that viticulture may have been introduced to the lands around the Danube by the Celtic tribes, most notably the La Tène and Noricum federation, prior to the Roman influence that came into the area following conquest around the 1st century BCE. Viticulture continued to flourish under Roman rule, with the introduction of Roman technology and knowledge, even though grape growing was technically banned in Roman territories north of the Alps. In the 3rd century, Emperor Marcus Aurelius Probus officially overturned the ban and is reported to have ordered the introduction of several grape varieties to be brought into the territories. It has been speculated that both Grüner Veltliner and Welschriesling may have been introduced to the region during the Roman period.
Wachau may refer to: