Quetzalcoatl the Feathered Serpent.
Pyramid serpent stairway guardians - Chichen Itza, Yucatan, Mexico.
Old stone bridge in a monkey sanctuary in Bali, Indonesia - compare to the serpent stairway guardians of the Maya. In Indonesia these are called "the Makaras", they guard the throne of the Buddha. (Click to enlarge this terrific photo).