With the Taubman Museum of Art, designed by Los Angeles based Randall Stout Architects, Roanoke in Virginia gets it first purpose built art museum. It also gets an adventuresome work of architecture, which like that Guggenheim Bilbao, is expected to jump start the region’s economy and bring visitors in droves to the steps of the new museum. It’s a tall order indeed, especially considering that art museums around the county reported a disappointing financial first quarter, causing many, including the Taubman, to drastically cut programs and staff.