East and West Berlin hold separate celebrations to mark the city’s 750th birthday. East Berlin spruces itself up and completely renovates the historic Nikolai Quarter. Chancellor Kohl attends the celebrations in West Berlin. Erich Honecker has been invited, but doesn’t show up. When it becomes clear that the two sides still disagree over Berlin’s divided status, the East feels cheated and promptly retracts the invitation it had extended to Mayor Diepgen.