Each side of the pyramid at the top features one high relief created with bronze castings by Jesús Fructuoso Contreras. They represent the "Tlatoque" Itzcoatl (1380–1440), ruler of Tenochtitlan; Nezahualcoyotl (1402–1472), ruler of Texcoco; (), ruler of Tlacopan; and the last Aztec Emperor, Cuauhtémoc (). Contreras cast them for the Aztec Palace, presented in the Mexican pavilion at the 1889 Paris Exposition.