From 2004 to 2008, the museum's building underwent a C$276 million redevelopment, led by architect Frank Gehry. Gehry was commissioned to expand and revitalize the museum, not to design a new building; as such, one of the challenges he faced was to unite the disparate areas of the building that had become "a bit of a hodgepodge" after six previous expansions dating back to the 1920s. The redevelopment plans was the first design by Gehry to not feature a highly contorted structural steel frame for the building's support system.