...from the top of the Basilica de la Virgen de Guadalupe in Mexico City.

My own translation of the text:

"The ground on which you walk, pilgrim, is sacred as Mary stepped on this ground when she appeared to Juan Diego on this very hill.

Continue walking with a caring and joyful heart until you find the fountain that symbolizes 'The Offering' Mexico makes to its Virgin.

Since the beginning of history and of Tepeyac, two impetuous waterfalls flow, a symbol of the brave Aztec race and of missionary Spain, calmly joining together at the feet of Mary, Mother and Teacher of the country of Mexico."

And here is the offering at the waterfalls:

It's an awesome sight. I never tire of it, even though I've seen it several times before.