Joining young Wart in Sir Ector’s castle in the Forest Sauvage of The Sword and the Stone would be amusing.
I thought Hogwarts, but that would be an awful place to be a Muggle- assuming the castle is even visible to Muggles, which I think may not be the case.
The Forest Sauvage does sound like it’d be most fun for an ordinary-type person. Count me in for there.
I’ll go with you. Let’s play with the pig’s bladder and roast his tail. Then we’ll go for long walks and pick wildflowers.
Well it was originally written for adults, but he’s also written kids books about the place so I’ll opt for Disc World.
If there were such a place I’d pack my case tomorrow and be on the first mail coach going there.
Otherwise I wouldn’t mind working at Hogwarts.
I believe the world of The NeverEnding Story would be a nice place to explore after The Nothing is defeated, of course.
I had about three places, and it’s been torture to pick just one. But, I finally decided that with just a week, I’d like to spend it in Diana Wynne Jones’ Time City. That seems like a small enough place to explore during that week, but a great place to really find stuff out too.
(My other two would have been from Tamora Pierce - either Summersea, Emelan from the Circle of Magic books or Tortallduring the Grand Progress as described in the Protector of the Small quartet. )
That was my first thought. But the price you pay is too high.
I’d like to be a house guest at the Four-Story Mistake.
For just a week I have to go for Hogwarts. It would be kind of scary, but also wonderful.
For long-term habitation I’d want the English village that Barbara Cooney illustrated Rumer Godden’s book The Story Of Holly And Ivy with.
Never Never Land!
Sure you would. Come now, shall we run through the multiplication table together?
The Phineas and Ferbverse
The Academy in Space Cadet - I’d eat pie with a fork, practice free fall movement, and learn foreign languages in an afternoon of sleep study.
Now to relax, I’d go somewhere nice and calm, like Puddleby-on-the-Marsh
Mister Wizard’s World.
Maybe the town of Vogelsang… or Tutter, Illinois.
What? Am I the only one who grew up reading The Wicked Enchantment? Okay, how about Poppy Ott and the Freckled Goldfish and similarly-adventurous tales from Leo Edwards?
I feel like stirring up a snakes nest so what if I lived in the land of the Giving Tree?
Kidding. Please. Don’t throw um, wood chips at me.
I’d rather hang out with Calvin and Hobbes. Even if Hobbes turns out to be just a stuffed toy, Roaslyn is still hot. Or if she turns out to be too young, Calvin’s Mom would a good plan B 
Hogwarts, if I had magical ability. Otherwise, it might be fun to solve mysteries with The Three Investigators or the Trixie Belden gang. Or do science with Danny Dunn. Yes, I’m dating myself. 
I think Busytown, the very Eurocentric 'verse of Richard Scarry, would be perfect.
Ooooh can I live in Whoville? Just for a speck of time?
This thread is so much fun.