The open-air mausoleum on the Plaza Monumental holds the skeleton of Padre Eusebio Francisco Kino, the Tyrolean-born Jesuit missionary who founded more than twenty missions across the Pimería Alta — what is now northern Sonora and southern Arizona — between 1687 and his death here in 1711. The remains lie under glass; visitors can walk right up.
The crypt is the heart of a planned square that anchors the whole town. The plaza is open day and night; entry is free. The bronze statue of Kino on horseback at the south end of the square is by the sculptor Julián Martínez and shows the missionary leading a packtrain, as he did across thousands of miles of desert. For believers, this is a pilgrimage site; for everyone else, it is one of the most interesting small-town plazas in Mexico.