The Thermenregion was formed with the wine law of 1985, when the districts of Gumpoldskirchen and Bad Vöslau were amalgamated. Its 2,181 hectares of vines reach from the edge of the Wienerwald forests around the outskirts of Vienna and southward along a chain of hills (highest point is Mount Anninger, at 675m) to beyond the town of Baden. In the northern part around the village of Gumpoldskirchen, white wine thrives in form of the indigenous varieties Zierfandler (or Spätrot) and Rotgipfler, whereas red wines produced from Sankt Laurent.Loamy soil derived from finely grained deposits predominates, although areas with increasingly coarse fractions are common.