"If you were given the chance to spend one day in a fictional world (from a book), which book would it be from and what would that place be?"
I was going to say something recent and common, like the world of Harry Potter, but this question made me think back to when I was a kid and I truly believed that these fictional places I read about could exist and I wished so hard that I could be part of them. So I choose, from my childhood reading days, the world of Enid Blyton's Magic Faraway Tree. For those of you who haven't read these staples of a British kid's literary education, the Faraway Tree grew in the Enchanted Wood and every week a different land came to the top of it and you could reach this land by climbing up the tree. Anyway, some of these lands weren't so great, like Topsy-Turvy land, but all manner of adventures were to be had and the child protagonists were usually rewarded at the end with a land that kicked ass, like the Land of Presents or the Land of Take-What-You-Want. These lands did exactly what they said on the tin - in them you could have any present or take anything you wanted. That sounded amazing to me as a child and I'm not sure anything has sounded as good since.