hile Berlin was alive this weekend — with public dance performances, speeches, and art works (including the temporary installation pictured above) — the focus of the spectacle was a dark moment in the German city's history: The Berlin Wall. Saturday marked the 50th anniversary of Aug. 13, 1961, when residents awoke to find barbed-wire barricades as well as road- and rail-blocks where an open border once stood between East and West Berlin. For 28 years the wall segregating family and friends was patrolled by soldiers tasked with apprehending anyone trying to cross it without appropriate documentation. Here, a look at the construction, eventual demolition, and haunting legacy of the Wall.