Museums of history and contemporary culture face many challenges in the modern age, particularly in Europe where processes of Europeanization and globalization require more cross-border cooperation and different ways of telling stories for visitors. Based on research in nearly 100 museums across the Continent and interviews with cultural policy makers and museum curators, it studies the growing transnational activities of state institutions, societal organizations, and people in the museum field such as attempts to Europeanize collection policy and collections as well as different strategies for making narratives more transnational like telling stories of European integration as shared history and discussing both inward and outward migration as a common experience and challenge.