The buildings that housed the Gestapo and SS headquarters were largely destroyed by Allied bombing during early 1945 and the ruins demolished after the war. The boundary between the American and Soviet zones of occupation in Berlin ran along the Prinz-Albrecht-Strasse, so the street soon became a fortified boundary, and the Berlin Wall ran along the south side of the street, renamed Niederkirchnerstrasse, from 1961 to 1989. The wall here was never demolished. The section adjacent to the Topography of Terror site is the longest extant segment of the outer wall, as the longer East Side Gallery section in Friedrichshain was part of the inner wall, not visible from West Berlin.