The Newseum, the world’s largest museum dedicated to journalism, opens its doors tomorrow in Washington, D.C. Designed by Polshek Partnership Architects, the $450 million, mixed-use building provides 250,000 square feet of space for the museum, three-times more room than its little-trafficked previous home in suburban Arlington, Virginia. Now located near the northeast corner of the National Mall, it fronts Pennsylvania Avenue with a glass-clad facade intended to symbolize the openness of the press and democracy—and to help lure tourists inside. “It is great collaboration of architecture and content,” says Peter S. Pritchard, president of the Freedom Forum, a nonpartisan foundation that operates the Newseum.