Döbling (ˈdøːblɪŋ) is the 19th district in the city of Vienna, Austria (19. Bezirk, Döbling, Doebling). It is located in the north of Vienna, north of the districts Alsergrund and Währing. Döbling has some heavily populated urban areas with many residential buildings, and borders the Vienna Woods. It includes some of the most expensive residential areas such as Grinzing, Sievering, and Neustift am Walde, and is home to many Heurigen taverns. There are some large Gemeindebauten, including Vienna's most famous, the Karl-Marx-Hof. Döbling is located in the northwest of Vienna and spans the slope of the Wienerwald (Vienna Woods) to the Danube and the Donaukanal (Danube Canal) that make up the border of the district in the east. The Danube forms the border between Döbling and the district Floridsdorf, and the Canal forms the border to the district Brigittenau. At the Gürtel Bridge, crossing the Donaukanal, the district border turns southwest and separates Döbling in the south along Gürtel Road (Belt Road) from the district Alsergrund. At Schrottenbachgasse the district turns towards the northwest and separates Döbling from the district Währing along the line Währinger Park–Hasenauerstraße–Peter-Jordan-Straße–Starkfriedgasse–Sommerhaidenweg. There is then a short stretch of border to the district Hernals at the edge of Vienna. In the northwest, the district borders on the municipality of Klosterneuburg, Lower Austria. Nearly 32.6% of the Döbling district area is urban (compared to Vienna citywide as 33.3%). Of this, 85.2% is for housing, whilst only 2.2% of the district is taken up by businesses, which is very low compared to other districts (Vienna 7.6%). With 51.8% of the district green space (48.3% for Vienna), Döbling is the fifth greenest district of Vienna. Agricultural land accounts for 14.9% of district land, with vineyards playing the biggest role around Grinzing, Nußdorf, Sievering, Neustift am Walde, and Salmannsdorf. A further 25.4% of the district is forested, plus 5.3% for meadows, 2.7% for small gardens, 2.