Unter den Linden runs the east-west from the site of the Stadtschloss royal palace at the Lustgarten park , where the demolished Palast der Republik once stood , to Pariser Platz and Brandenburg Gate .
It is named for its linden ( lime in British English ) trees that line the grassed pedestrian mall in the middle of the road Unter den Linden runs east-west from the site of the former Stadtschloss royal palace at the Lustgarten park , where the demolished Palast der Republik used to be , to Pariser Platz and Brandenburg Gate .