The former course of the Wall between Brunnenstrasse (bottom) and the grounds of the Nordbahnhof station (top) along the border between the former boroughs of Mitte (left; former East Berlin) and Wedding (right; former West Berlin).
About the photos
In these aerial photos from 2005, the outer wall, built on the border to West Berlin, is marked in red, and the inner wall behind it in blue. The political border that was crucial to fugitives is shown in yellow wherever it deviates from the location of the outer wall.