I've just finished reading this book, and i'm still feeling this kind of fever that seems to come when i read books so fantastically crafted that even when i finish reading them, it's as if i was still inside the world that was created, and living again some part of it in my mind, so i can't stop thinking about them even when i'm on the surface thinking of something else.
I think to try to tell here too much of the story would be to spoil the books to any who read them, and so i'll try not to.
The book, which contains the last two from the tetralogy "The Book of the Sun", that begun with "Shadow and Claw", tells the story of Severian, a boy raised on earth in a future so distant from us that the sun is but a dying star, all resources have been exausted ages ago, and our age is remembered by nothing but almost forgotten myths. The books are written as an autobiography, in which Severian tells us his adventures from a humble beginning in the long decaying Citadel of Nessus and his Guild, commonly known as the Torturers, and a future so strange he would never have imagined it. Along the way we get to discover the world in which he lives at the same pace he does, and to discover new mysteries faster than answers to them (as is usual).
This is one (or the best) books i've ever read, and i'm an ardent reader of science fiction and fantasy. I'm tempted to commit an heresy, and quite plainly state that i did enjoyed this book far more than i did The Lord of The Rings, although i love all Tolkien's books and have read most of them. Perhaps that was because i felt i could relate more with this story than his, because although it has elements one could call simply fantasy, it deals with a possible future, and despite all the cryptic changes in the fabric of society, culture and religion, people within still have the same yearnings and desires, so that even in that almost alien world one feels that might happen.
I think i've wrote too long a review already, but you're just searching for the bottom line, i'll give it now: If you like science fiction, fantasy, or if you just like books that are true works of art, read this. It won't let you down.
Just make sure you have ample time to read... you won't be able to put it down until the end! ;^)