(Spoiler Warning)
Night’s Dawn universe
Locations:
In Unimeron orbit, the Laymil had created skyheavens, large blue-green cobweb-like structures with about 200 km in diameter, rotating once in a bit more than five hours.
Skyheavens orbited Unimeron just under 1 Mm at all possible inclinations, making a net which fully covered the planetary surface. They served as spaceports, dwelling and manufactoring places, and magnetosphere energy generators: on the nightside of Unimeron, skyheavens were aglow with Van Allen radiation.
Like spaceholms, skyheavens were alive with a conscious essence (not unlike Edenist habitat personalities). They were taken out of the universe by possessed Laymil along with Unimeron in 211 BC.