Incarceron by Catherine Fisher. To free herself from an upcoming arranged marriage, Claudia, the daughter of the Warden of Incarceron, a futuristic prison with a mind of its own, decides to help a young prisoner escape.
One of my favorite books, The Alchemist, Paulo Coelho. This is such a beautiful book. Not only is it inspiring, but it also teaches you the virtue of patience and how it pays off when trying to reach your dreams.
The book was dedicated to C.S Lewis' niece, I think, Lucy. The dedication said something like this "I started this book when you were young enough to read fairy tales, but someday you will be old enough to start reading fairy tales again.