[chime]

Not a non-profit but Ubisoft has been doing significant 3D scanning and sharing (unsure under what license) for their Assassins Creed franchise: https://mocapsolutions.com/blogs/news/assassin-s-creed-unity...

I haven’t played all the games but the recent ones I tried had a historical tour mode where you get to explore day-in-the-life of an Ancient Greek city or Viking village, with people going about their routines working, trading, farming, gathering. With VR it would be the closest thing to time travel we currently have.

And they do have many of the historical landmarks in pretty stunning detail, with drapes and paintings of what it most probably looked like back then.