Westend is a locality of the Berlin borough Charlottenburg-Wilmersdorf in Germany. It emerged in the course of Berlin's 2001 administrative reform on the grounds of the former Charlottenburg borough. Originally a mansion colony, it is today a quite densely settled, still affluent territory adjacent to Berlin's inner city in the east.

Heerstraße runs from Theodor-Heuss-Platz in Berlin-Charlottenburg to the western city border of Berlin in the locality of Staaken in the borough of Spandau. It is part of Bundesstraße 5; from Theodor-Heuss-Platz to Wilhelmstraße it is forms part of Bundesstraße 2. With a length of around 10 kilometres, it is one of the longest streets in Berlin and an important commuter route. The street is a five-lane expressway (Kraftfahrstraße), depending on traffic flow the middle lane is available during rush hours in the morning (eastbound) and in the evening (westbound).