It’s been a year since Minneapolis’s Walker Art Center opened its massive addition to the public, and the museum has gotten great press and serious local buzz ever since. Donations are also up, but the uptick in attendance the Walker had hoped for hasn’t materialized. “The figures for the first post-expansion year are somewhat unexpected since museums often see a substantial upswing in visitors when they open a new wing, especially when it is designed by a high-profile firm such as Herzog & de Meuron.”