  Dear Visitor and Charleston Reconstructed were location-based augmented
reality (AR) experiences created between 2018 and 2020 dealing with two
controversial monument sites in the US. The projects were motivated by the
ability of AR to 1) link layers of context to physical sites in ways that are
otherwise difficult or impossible and 2) to visualize changes to physical
spaces, potentially inspiring changes to the spaces themselves. We discuss the
projects' motivations, designs, and deployments. We reflect on how physical
changes to the projects' respective sites radically altered their outcomes, and
we describe lessons for future work in location-based AR, particularly for
projects in contested spaces.
