In the first episode of The New Adventures of He-Man, "A New Beginning", we see the Eternian Royal Palace in all its glory. It is clear that the artists looked to the Filmation show for inspiration, at least with the initial entrance. However, here the Royal Palace does not look that inviting, and is somewhat grim in its appearance. Much like the homage to Filmation's Snake Mountain in the same episode, this could be any old background. That said, it is nice that they decided to pay homage to the original series.
(click on the image to see it at full-size)