[Lawtan]

Farscape and Dune come to mind...
But yeah, I sort of figured that a structure that could maintain itself despite speeds greater than the speed of light would need to be able to rapidly fix itself, so something living.

...Also have a horror story about a Nautiloid abomination infecting people with fungi to create the resources needed to power a device akin to a particle accelerator...but for exploring and manipulating strings (string theory exploration)