I read the Seven Citadels series a long time ago, but the story has stayed with me. The storytelling and world building is impressive and even if the descriptions are sometimes on the extravagant side (why is everything made out of luxurious materials everywhere?) I enjoyed it, especially the immortality aspects and the geography. The beginning is more or less what one might expect, but the end twist is surprising and the entire last book is somehow liberated from the usual constraints and environments in a fantasy series from that period. There are a great deal of things in the narrative I disagree with, however, I think I need to read it again.