R. Dennis Antinori has created a stunning animation of Larry Niven’s Ringworld, so detailed you can watch the shadow squares circling, witness night and day advancing along the surface, and see the Bussard attitude jets firing. There’s also a navigable map of the surface.

A second animation lets users create the illusion of navigating in space near the Ringworld. My computer screen is small yet I constantly lost track of it — probably why Nakamura Lines hired Beowulf Shaeffer instead of me…  

[Thanks to David Klaus for the story.]