Final answer:
The Pyramid of the Sun in Teotihuacan was decorated with talud-tablero motifs, including painted heads of the Feathered Serpent and the Rain or Storm God, as well as reliefs of aquatic themes.
Step-by-step explanation:
The Pyramid of the Sun is one of the principal monuments in Teotihuacan, an ancient Mesoamerican city. The decorations and architectural elements of this pyramid, as well as other structures within the city, exhibit the unique Teotihuacan architectural style, which includes the talud-tablero motifs. Decorations such as painted heads of the Feathered Serpent, the goggle-eyed Rain or Storm God, and reliefs of aquatic motifs were found during excavations, especially in the earlier-phase tableros and stairway balustrades of temples such as the Temple of the Feathered Serpent.
Frescoed walls and other decorations were influenced by Egyptian, Roman, or Mesoamerican motifs, as seen in various cultures across history. The Pyramid of the Sun, while not decorated in the exact same manner as other referenced items from different cultures and time periods, shares a similar grandeur and spiritual significance with these structures and artworks.