Possible worlds/people to visit:
1. Dr. Seuss -- The world should look very Seuss-ical (but not so much that it's copying...). Dr. Seuss talks in really strange rhyme-y ways and explains why it's good to allow your mind to stray into the fictional world.
2. Edgar Allen Poe -- This part can be really dark and creepy (maybe even scary?), and it should show how real and inspiring literature can be.
3. Greek Gods and Goddesses on Mount Olympus -- (because we wanted to include mythology) They would obviously talk about Greek myths and explain how the lessons from these myths helped people in real life.