of Scandinavian architecture. Kimbell Art Museum extension, Fort Worth, Texas (2007–2013) The extension of the Kimbell Art Museum in Fort Worth, Texas (2007–2013) is an addition to the museum designed by Louis Kahn the modernist architect for whom Piano worked at the beginning of his career, completed in 1972. The building faces the Modern Art Museum of Fort Worth, designed by Tadao Ando (2002). The new gallery occupies , compared with for the Kahn building, and cost 135 million dollars. Piano created a dramatic new entrance for the museum, with huge windows showing the bright red furniture against the alabaster white walls within. The materials used in the new museum included light-colored concrete, to harmonize with the Kahn building, combined with beams and ceilings of Douglas fir, and floors of white oak and an abundance of double-paned and fritted glass. The museum also includes modern ecological features including a vegetal roof, photovoltaic cells on the roof, geothermal wells, and LED lighting. Piano wrote: "Our building echoes the Kahn building through its height, its scale and its general plan, but our building has a character that is more transparent and more open. Light, discreet (half of the surfaces are underground), it nonetheless has its own character and creates a dialogue between the old and the new." However, the museum also attracted critics, who said it was not ambitious enough. Mark Lamster, architecture critic of the Dallas Morning News, wrote: "With its almost impossibly smooth walls and squared columns of titanium-treated concrete, Piano's front facade evinces a clinical, stoic perfectionism.... Altogether, the assembly is a minor miracle of construction. Most impressive are the beams: 100-foot-long bars of laminated Douglas fir, trucked from Canada. But for all its technical mastery, it offers none of the elemental majesty of Kahn's building across the lawn. It is deferential to a fault." Whitney Museum of American Art, New York City (2007–2015) The Whitney Museum of American Art decided to move from its original building on Madison Avenue, constructed by Marcel Breuer in 1966, to a new location at the corner of Gansevoort and Washington in Manhatttan, a neighborhood once occupied by meat packing houses, next to the High Line, a riverside highway and park. The museum, with nine levels, has an asymmetric industrial look to match the architecture of the neighborhood. In addition to its interior galleries, it has of open-air exhibit space on a large