Embassy of the United States, Berlin not be considered a capital until Berlin was unified. Relations with the East German state were hampered because of this policy, and by the erection of the Berlin Wall in 1961. The wall made the site of the former U.S. Embassy, still owned by the U.S. government, an inaccessible vacant lot that was part of the security zone separating east and west Berliners. The site became accessible after the Berlin Wall came down in November 1989, but remained a vacant lot until the 2004 groundbreaking for construction of a brand new U.S. Embassy. In the early 1970s the U.S., along
Berlin-Spandau station was expected to lead to the reopening of the line to Staaken via a new S-Bahn station called "Rathaus Spandau" (rather than Spandau West). However, this was postponed, as U-Bahn line U7 was completed to Rathaus Spandau (located next to Spandau West station) on 1 October 1984. The initial plans for the Hanover–Berlin high-speed railway were developed during the same decade. Negotiations with East Germany for what was initially intended as a transit route between West Germany and West Berlin began in autumn 1988. The fall of the Berlin Wall and the completion of negotiations with an agreement on the