A book by Alastair Reynolds.
I haven't read this book yet, but that's because i've had trouble finding it. I have it on order at my bookstore, though. I know it's very much influenced by the Dark Tower, specifically one of the main characters is, of course, a man named Roland Childe, and the object of the book is to find and ascend a tower of puzzles...or something like that.
So i'm pretty anxious to read it. ^^
I was just wondering if anyone else had read it?