A random thought I just had:
In Narnia, the sea is on the east, and beyond it, in the 'utter east' is Aslan's country.
In Middle Earth, the sea is on the west, and beyond it* is Valinor, the home of the immortals.
No idea of the significance of this - just interesting.
Anyway, I'd better get back to hoovering...
* technically, since the world was made into a sphere, it is no longer on the surface of the globe. Still, you sail west to get there, should you have a boat capable of escaping the 'circles of the world'