The Ringworld throne
From back cover Del Rey paperback May 1997:

*Come back to the Ringworld... the most astonishing feat of engineering ever encountered.  A place of untold technological wonders, home to a myriad humanoid races, and world of some of the most beloved science-fiction stories ever written!*

The human, Louis Wu; the puppeteer known as the Hindmost; Acolyte, so of the Kzin called Chmeee... legendary beings brought together once again in the defense of the Ringworld.  Something is going on with the Protectors.  Incoming spacecraft are being destroyed before they can reach the Ringworld.  Vampires are massing.  And the Ghouls have their own agenda -- if anyone dares approach them to learn.

Each race on the Ringworld has always had its own Protector.  Now it looks as if the Ringworld itself needs a Protector.  But who will sit on the Ringworld Throne?
Science fiction, Ringworld (Imaginary place), Fiction, Fiction, science fiction, general, Ringworld (imaginary place), fiction
Larry Niven
Laurence van Cott Niven — known as Larry Niven — is an American science fiction writer. His best-known work is Ringworld (1970), which received Hugo, Locus, Ditmar, and Nebula awards. The Science Fiction Writers of America named him the 2015 recipient of the Damon Knight Memorial Grand Master Award. His work is primarily hard science fiction, using big science concepts and theoretical physics. It also often includes elements of detective fiction and adventure stories. His fantasy includes the series The Magic Goes Away, rational fantasy dealing with magic as a non-renewable resource.

Niven was born in Los Angeles. He briefly attended the California Institute of Technology and graduated with a Bachelor of Arts in mathematics (with a minor in psychology) from Washburn University, Topeka, Kansas, in 1962. He did a year of graduate work in mathematics at the University of California at Los Angeles. On September 6, 1969, he married Marilyn Joyce "Fuzzy Pink" Wisowaty, a science fiction and Regency literature fan. He is an agnostic.

Source: Wikipedia