The Environments of Change SSHRC Partnership Grant brings together a multi-disciplinary team of scholars to study and recreate virtually the built and natural environments of late medieval England. This lightning talk highlights how our team has used Historic maps, remote sensing data, and GIS to analyze and reconstruct the historical environment around Herstmonceux Castle and the Pevensey Levels in East Sussex, England. To begin, it showcases the medieval, archival, and born-digital source materials that have been used to inform our reconstructions. It provides examples how these materials have informed the reconstruction of lost medieval structures, and landscape reconstructions. Finally, it provides a brief preview of the Augmented Reality game currently under development, and future project goals.