Mr. Beedell, Roke Julian Lockhart wants to read Ring by Stephen Baxter (Xeelee Sequence, #4)
reddit.com/r/scifi/comments/18v7g0c/comment/kfp4scn makes me want to read it:
Stephen Baxter had the Ring, which is the explanation for the Great Attractor in his Xelee books. It's a megastructure millions (I think) of light years across.