Onna wall is a natural interaction system that provides an immersive interactive space for multimedia fruition. The system displays a map of Onna, a little town near L'Aquila almost completely destroyed by the earthquake of 2009. Users can select from eight different areas of Onna through natural gestures. The system displays the status of the selected zones before the earthquake. The interactive multiuser system is able to manage two different users interacting at the same time.