Source: WTL© photograph taken on-site at the UNAM library in Mexico, D.F. (2007).
Image: Close-up telephoto view of the south façade of this library building.
Humanities Questions: (A) To what do the words "Ptolomeo," "Copérnico," and "Plus Ultra" refer (look them up)? (B) What do they have to do with the three-hundred-year-long Colonial period of the viceroys of Nueva España (New Spain)? (C) What is their relationship to the pre-Conquest sun symbols in the upper corners? (D) What do they have to do with a modern public university? And, finally, what (perhaps) do the two dominant circles remind you of?