“Banks will fail, as we’ve been reminded a little too often lately. But their buildings can still go on to lead long and productive lives,” as is the case with the neoclassical home of Philadelphia’s new Chemical Heritage Foundation Museum. Peter “Saylor, who has become something of a museum doctor for Philadelphia’s dusty exhibit halls, has given the battered bank a glistening new interior that is so ethereal and restrained, it virtually dissolves into [architect John] McArthur’s granite walls.”