Inquiring into the history of the Open Sky Museum of Valparaíso as an unprecedented museographic phenomenon necessarily implies wandering through the streets and hills to stop at its walls: as interventions carried out collectively and outside the artistic and institutional circuits, it invites us to ask ourselves how they were possible and what place or no place they should have in the field of art. Magdalena Dardel proposes, thus, a constellation that interrelates from the foundations of the School of Architecture of the University of Valparaíso, the spatiality of the city, to the objectives and proposals of the artists who were part of the Open Sky Museum ?without ignoring the post-dictatorial context?, and that frame this project in an interstitial place between modern abstract painting and contemporary collaborative, participatory and community practices. In light of this, the museum is a radical proposal at a global level that contributes to problematizing