Mariahilf is the 6th municipal district of Vienna, Austria. It is near the center of Vienna and was established as a district in 1850. Mariahilf is a heavily populated urban area with many residential buildings. It has a population of 31,621 within an area of 1.48 square kilometres (0.6 sq mi).

The Innere Stadt is the 1st municipal district of Vienna located in the center of the Austrian capital. The Innere Stadt is the old town of Vienna. Until the city boundaries were expanded in 1850, the Innere Stadt was congruent with the city of Vienna. Traditionally it was divided into four quarters, which were designated after important town gates: Stubenviertel (northeast), Kärntner Viertel (southeast), Widmerviertel (southwest), Schottenviertel (northwest).