The visa-free travel for West Germans between the GDR and the FRG became possible from December 24, 1989, after tough government negotiations. The minimum obligatory exchange at the border is also not required. Passport and customs controls are still carried out by the GDR authorities. Even business travelers are subject to this rule. The picture was taken on Christmas Eve at the inner-state border crossing Heinrich-Heine-Strasse in Kreuzberg.