Totally!!! I absolutely agree. I keep on rememebring when the princess is holding the grain of sand and it reminds me that we have whole entire worlds in just a grain of sand.
Or how it starts getting destroyed because people don't believe in it anymore - and how the power of belief and intent to actually manifest circumstances and matter is not only possible but a cosmic law.
Or how the boy's fate is somewhat tied to Atreyoos fate. So many things.
The other place I have found nearly every reference having multiple levels is The Chronicles of Narnia books, all 7 of them.