“When the Newseum decamped from Rosslyn [in northern Virginia] eight years ago [for downtown D.C.], it left behind a modern building with a broadcast studio, a beckoning silver dome and a mind-boggling 54,000 square feet of space. … Called Artisphere, it is [now ]Arlington’s trailblazing new cultural center – a home not just to visual art, but to esoteric discussions, edgy theater, performance art, ballroom dance and music ranging from classical to punk.”