A Soviet miniature photo camera F-21 featuring a button on the lens, equipment of MfS officers, is pictured at the former headquarters of East German secret police Stasi (The Ministry for State Security) turned museum in Berlin Lichtenberg, on Sunday. A weekend celebration at the museum marked the 35th anniversary of the fall of the Berlin Wall, which ushered in the end of communism and national reunification on Nov. 9, 1989. RALF HIRSCHBERGER — AFP VIA GETTY IMAGES