TimeWalk.org is an open source Github-based project recreating Manhattan across key historical periods—including 1609, 1660, 1776, and earlier Ice Age landscapes. Built in Unreal Engine 5, it lets users “walk through time” by exploring New York City as it was centuries ago. The project combines archival maps, historical documents, and AI tools to place buildings, terrain, and people with as much accuracy as evidence allows. It runs on desktop and web today, with future support planned for mobile, VR, and AR—enabling everything from immersive classrooms to outdoor augmented reality overlays of past cityscapes on today’s streets. Like Wikipedia, TimeWalk evolves through community contributions, with historians, artists, and technologists refining the environment over time.

Maps and supporting materials can be found in our Github repository https://github.com/TimeWalkOrg.