Hahahaha, no not that pilgrimage.
Luján is a popular, actual religious pilgrimage destination as the site of a large Neo-Gothic basilica and the 388-year-old icon therein.
That icon is Our Lady of Luján, the official patron saint of Argentina, Uruguay, and Paraguay. I neglected to get a photo but it was Good Friday and the basilica was super full. The icon was commissioned for a man in Santiago del Estero, but when the caravan parked in present-day Zelaya, the oxen refused to continue until the statue was unloaded. This was seen as a miracle. The Virgin clearly wanted to stay in a tiny podunk that happened to be much, much closer to Buenos Aires than Santiago del Estero. That didn’t stop someone from moving her about 50 km away to the larger podunk of Luján 40 years later. The basilica was started in 1890.
But ALSO in Luján are some museums! I was only there for the afternoon so I didn’t even see them all! What I did see is coming up next!