“Piano’s Whitney needed to live up not just to his own immense portfolio but also to the array of 21st-century architecture clustered around the High Line, and to the museum’s current home by Marcel Breuer, one of New York’s most distinctive architectural achievements. Instead, he has capped the High Line with a pale, metal-clad tower, interlocked with a stack of horizontal blocks that step back in the manner of a clunky cruise ship.”