It's hard to believe the Shrine has gone this long without expressing concisely what the Shrine of Our Lady of Guadalupe is and why it exists like it does in this series of videos. They are really well done, I'd recommend watching them all.
"Everybody wants to say 'it can't be done anymore.' And this building says, 'Yes, it can be done.'" - Duncan Stroik
Through the history of Christendom, peasants of impoverished means built glorious monuments to the Faith. I would hope the most prosperous country in human history would not forget to give God glory through our very best offering to Him, like the offering of Abel the Just.