San Xavier del Bac Mission Tucson AZ Mission San Javier del Bac was built under the direction of the Franciscans 1783-1797. The front facade is unbalanced. The left side does not match the right side. The interior is colorful and really gaudy. Painting depicting Pentecost. Painting depicting the Last Supper. Gaudy ornate. Looking up to the rotunda. Not sure what this represents. Antique Psalter.