Utopies Remain in the past. (Colored)

With this illustration, my purpose was to create not only a fantasy world, but an idea: Utopies remain in the past. Sometimes we believe the previous times were better. We idealize the past, and transform it in a utopy.
With skeletons and gigantic mushrooms, I want to transmit the feeling of "ancient" and we are the city, who continues living in the past. Regardless, we keep building over what we think, was a nice world