Learning about the past through situatedness, embodied exploration and digital augmentation of cultural heritage sites.

•Exploration and employment of a novel projective AR approach, namely the World-as-Support interaction paradigm, in the context of a cultural heritage site.•Presentation of a design process of a virtual heritage experience for a bomb shelter built during the Spanish Civil War that includes different needs and viewpoints of primary students and adult experts.•Evaluation of the potential and limitations the educational experience of a first prototype in situ.