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.
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.