Vienna on the Danube is the capital Austria and with almost 2 million inhabitants it is home to almost a fifth of Austria's population. In the greater Vienna area, the population even goes up to 2,8 million - almost a third of Austria. Vienna is located on the eastern edge of the Alps, at the transition to the foothills of the Alps in the east, the Pannonian Plain directs. The city center extends over the plain on the Danube, the western districts of the Vienna woods, the easternmost mountain group in the Northern Alps. Only a relatively small proportion of the Vienna city area is built on. About half of Vienna is grassland, larger parts are also used for agriculture.