Abstract : Ultra-high-resolution (Powerwall) displays offer a vast real estate for displaying data, but also present a new set of interaction issues. This workshop aims to bring together researchers and practitioners in the research area of Powerwall technologies. The workshop focuses on four key research questions: how do the interaction metaphors change as we move away from desktop interaction? How do we make the most of the visual resolution for data visualization? How can the physical size support collaborative work? And what are the lessons learnt from installing such displays?