Nice explanation on Quetzalcoatl, mesoamerican diety. The graphic representation is from an ancient aztec codex, and the snake heads are recreations based on Chichen Izta in the yucatan.
I always liked the name 'Quetzalcoatl' - so evocative. I learnt it as a kid after I found out about a pterosaur named after it (Quetzalcoatlus sp.).
Nice display but considering that the Aztecs were a Meso-American / North American civilization not really accurate given the "Cloud forest" / "South America" theme of the building. As Carlos has already alluded to in his comment the snake heads are not particularly Aztec either as Chichen Itza was a citadel created by a much earlier civilization, the Toltecs.