The events leading to the construction of San Xavier occurred in a reality that simply isn't our reality.
Barefoot friars walked into what was essentially an alien sun beaten planet, and some how induced the natives to construct gleaming white domes that wouldn't be out of place in old Europe, all for the glory of God.
If anything, the internal lives of those austere religious men are more alien to us than those of the Indians.
Mission San Xavier del Bac at Tucson, Arizona, alongside an O'odham village named Wa:k. The place lies on the ruins of an even older Sobaipuri O'odham village.