In a media landscape dominated by private information conglomerates, television documentary should be a key format to ensure a diversity of points of view because it has the possibility to open alternative spaces or heterotopias. This article points out the concept of heterotopic documentaries and applies it to the Colombian case of study of the documentaries of armed conflict produced during the period of Democratic Security Policy in Colombia, a political period in which armed conflict was systematically neglected. In this context, television documentaries of armed conflict that that could be initially understood as a reaction to media invisibility reveal the contradictory character of heterotopia. From the cases analysed in private, public, and transnational television, the idea of heterotopic documentary emerges as a paradoxical audiovisual space that tends to regularize the access of the viewers to the 'other spaces' that it promotes. © W. S. Maney & Son Ltd 2014.