The slow extension of my Ghibli collection added the wonderful Nausicaa of the Valley of the Wind. I hadnt seen this for many years and the 1984 classic is still beautiful and inspirational today. I love the almost casual presentation of an original world and all its elements, combined with the visual language.
Here are a few images of various elements of the visual design and concepts that I like, the animation (see in trailer above) also adds to these, esp the flight of her glider and the insect's legs. Here are a suite of images from the collection at mehve.net.
[Nausicaa of the Valley of the Wind images via mehve.net]