Acclaimed as finest example of mission architecture in U.S., southwest of Tucson on Tohono O'odham Reservation. Active parish. Gift shop. arts, crafts shop. Cafe nearby. For the first time in its more than 230-year history, free guided tours are now available. The 45-minute tours are led by specially trained, volunteer docents, who explain the Mission's history and its lavishly decorated interior, the richest and most ornate in the Southwest. For current schedule, please go to their website and click on "Docent Tours Info."