“The addition will make the museum comparable in size to the Georges Pompidou Center in Paris and the Museum of Modern Art in New York. The annex, which resembles glass boxes stacked up arbitrarily to form a 220-foot pyramid, has been designed by the Swiss firm Jacques Herzog and Pierre de Meuron, the same architects who in the late 1990’s turned an abandoned power station on the south bank of the Thames, across from St. Paul’s Cathedral, into Tate Modern.”