The longest shopping street, and the one most frequented by residents, Mariahilfer Strasse is the dividing line between the Sixth and Seventh districts. It's generally less expensive and exclusive than downtown streets. Gerngross, probably the most popular department store in Vienna, is located there. You can start at the Westbahnhof (U-3 and U-6 subway lines) and walk almost to the Ring, where the U-2 Babenbergerstrasse station is located. There's limited traffic on Mariahilfer Strasse, and sidewalk cafes have sprung up, trees have been planted and many grand old buildings have been renovated since the 1980s.