Wiley Miller, the author, is the creator of the comic strip Non Sequitur and so this book has a lot of illustrations. It is a very fun little story. Basil feels so ordinary and then one day he is whisked away to a city in the air and from there has a grand adventure to help save the city. The illustrations are fun and the story is definitely a good one for kids.
Here's a couple of (bad) page shots: