I like how this is similar to "Treehouse Valley," but gives you a completely different feeling. Treehouse Valley made you think of childhood dreams, mechanics using scrap parts to build a shelter. This however evokes careful planning of architects and scientists and a society. Also the color moods set it off, Treehouse Valley seemed peaceful yet full of energy, this one makes me think of libraries and controlled experiments and quiet conversations.
In any case, they are both beautiful visions of childhood dreams.