I'm trying to track down a story. I need to know the title and author. All I know about the story is that it involves a starship so huge it has a planetary system within it. Does anyone know what this story might be?
{Looks at the Amazon link, looks at the list by Skwirl', looks at the Amazon link...}
If you liked a Dyson Sphere as a story device, then I'd recommend checking out some of the titles that Skwirl' recommended. I think you might like them, in particular the Ringworld series by Larry Niven.