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.

翻译：亲爱的访客和查尔斯顿(Charleston)重建了2018-2020年间基于地点的强化现实(AR)经验,这些经验涉及美国两个有争议的纪念碑。 这些项目的动机是AR能够(1) 以否则困难或不可能的方式将环境层面与物理遗址联系起来,(2) 设想物理空间的变化,可能刺激空间本身的变化。我们讨论了项目的动机、设计和部署。我们思考了项目各自地点的物理变化如何从根本上改变其结果,我们描述了未来在基于地点的AR工作中的经验教训,特别是有争议空间的项目。