these, no other buildings remained. Below ground, the U-Bahn section through Potsdamer Platz had closed entirely; although the S-Bahn line itself remained open, it suffered from a quirk of geography in that it briefly passed through East German territory en route from one part of West Berlin to another. Consequently, Potsdamer Platz S-Bahn station became the most infamous of several Geisterbahnhofe (ghost stations), through which trains ran without stopping, its previously bustling platforms now decrepit, sealed off from the outside world, and patrolled by armed guards. During its 28 years in limbo, Potsdamer Platz exuded a strange fascination towards many people on the western side, especially tourists and also visiting politicians and heads of state. For the benefit of the former, the row of post-war single-storey shops in Potsdamer Straße now sold a wide variety of souvenir goods, many of which were purchased by coach-loads of curious visitors brought specially to this sad location. An observation platform had been erected, primarily for military personnel and police but used increasingly by members of the public, so that they could gaze over the Wall at the wilderness beyond. Meanwhile, among the many V.I.P.s who came to look were U.S. Senator Robert F. Kennedy (22 February 1962), Prime Minister Harold Wilson of the United Kingdom (6 March 1965), H.M. Queen Elizabeth II of the United Kingdom (27 May 1965), H.R.H. Charles, Prince of Wales (3 November 1972), U.S. President Jimmy Carter (15 July 1978), and U.S. Vice President George H. W. Bush (1 February 1983). Some scenes of the 1987 Wim Wenders movie Der Himmel über Berlin (English title: Wings of Desire) were filmed on the old, almost entirely void Potsdamer Platz before the Berlin Wall fell. In one scene an old man named Homer, played by actor Curt Bois, searches in vain for Potsdamer Platz, but finds only rubble, weeds and the graffiti-covered Berlin Wall. The movie thus gives a good impression of the surroundings at the time, which are completely unlike what can be seen today. Photos, 1975–1989 The fall of the Wall After the initial opening of the Berlin Wall on 9 November 1989, Potsdamer Platz became one of the earliest locations where the Wall was "breached" to create a new border crossing between East and West Berlin. The crossing began operating on 11 November 1989. The crossing required the dismantling of both the inner and outer walls and the