Yes, I know at least one: Church of the Immaculate Conception, Queen of the Painted Churches (AKA St. Mary's). It's in Schulenberg, Texas, 78956. If you only ever see one, see this one! My great-grandfather assisted in building it. He is also known to have said "The only organ that sounds nice is in St. Mary's."
I refuse to post my pictures of it, as it might spoil your delight... and they aren't that good anyways... But, Oh! How beautiful is the church! Even the best of pictures shall never do it justice!
When are you passing through? I shall try to provide directions when the opportunity presents itself. And yes, it is accessible from I-10, but it will take maybe 45 minutes to reach it.