Cultural heritage sites and museums are faced with an important challenge – how best to balance the needs of engaging visitors in meaningful and entertaining experiences, while at the same time exploiting the affordances of exhibits for instructional purposes. In this chapter, we examine the use of augmented reality in the context of informal learning environments, and how this type of technology can be used as a means to enhance learning about history. The research case studies are reviewed in terms of the use of historical locations, experience mechanics, narrative/plot, and role-playing (the later two representing game-based elements) in the design guidelines of instructional activities and applications (Dunleavy & Dede, 2014). In doing so, we critique the theoretical, methodological, and instructional underpinnings of studies that evaluate augmented reality applications and draw several recommendations for future research in this field.