A very good science fiction novel. It is much more literary than you would expect for SF. It has a lot of references to the Poet John Keats, but as well as that the structure which is a set of interrelated tales of a group of travelers on a pilgrimage directly harkens back to the Canterbury Tales.
The tales themselves are the most important element. All the tales are left with ambiguities as well as the central story. The quality varies a bit, but the world is finely detailed and has a surreal quality to it. The book is rich in inventiveness.
I`m torn about reading the sequels, because they would resolve things that are very effectively left unresolved.
Overall, a very fine work.