They have a church on two levels. The lower church is used more often because it is warmer. That is where my mothers funeral took place. The upper church is used for usually one mass.
An interesting sidelight. I have several relatives out that way. Once one found a one hundred dollar bill stuck in the door. She took is, of course, to one of the Fathers. He told her mexicans will often stuff money in the doors.
Thank God somebody does! The good fathers need all the money they can get for the support of that magnificent structure.