The San Francisco Museum of Modern Art is actually two buildings by different architects fit together; an earlier (1995) five-story postmodernist structure by the Swiss architect Mario Botta, to which has been joined a much larger ten-story white gallery by the Norwegian-based firm of Snøhetta (2016). The expanded building includes a green living wall of native plants in San Francisco; a free ground-floor gallery with tall glass walls that will place art on view to passersby, and glass skylights that flood the upper floors of offices (though not the galleries) with light. The facades clad are with lightweight panels made of Fibre-Reinforced Plastic. The critical reaction to the building was mixed. Roberta Smith of "The New York Times" said the building set a new standard for museums, and wrote: "The new building’s rippling, sloping facade, rife with subtle curves and bulges, establishes a brilliant alternative to the straight-edged boxes of traditional modernism and the rebellion against them initiated by Frank Gehry, with his computer-inspired acrobatics." On the other hand, the critic of "The Guardian" of London compared the facade of the building to "a gigantic meringue with a hint of Ikea."