''The people who built it were the Spanish missionaries''
Spanish missioners.
The Spanish-style churches in the Southwest were built by Spanish missionaries in the 17th to 19th centuries. The most famous of these churches were built by the Franciscans and Jesuits as part of their mission to convert Native Americans to Christianity. The churches are known for their adobe construction, bell towers, and simple yet elegant architecture.
From the early seventeenth century to the early nineteenth century Spanish missionaries from the Franciscan, Dominican and Jesuit orders of the Roman Catholic Church built missions throughout the Southwestern United States.
membranophone
The style is called Gothic.
pilgrimage churches, Romanesque style churches built along pilgrimage routes.
William The Conquer of Normandy invaded England in 1066. At this time Normandy was a country north of France. He had churches, castles & towers built in the Norman style of his homeland. As time passed Normandy became, and remains, a part of France.
There are many pictures of it online, and the church itself has a website with photos. You will see it was built in a simple style, reminiscent of traditional Spanish churches of the 1700s. The original building was destroyed by fire and a subsequent building was damaged by several earthquakes, but the church has tried to emulate the style of its origins.
I don't thing they stopped, but the newer churches are built in a different style than the old cathedral type churches. I'd guess cost may play a roll as well considering a church is privately funded.
In western Europe the churches and some other public buildings built during the Middle Ages had a distinctive style that was at first called 'gothic' (barbarian) out of contempt by comparison with the standard romanesque style that had prevailed for several centuries. After further developments in architectural style, such a Greek revival (putting up buildings that looked like the Parthenon), churches of the 19th century were built in a 'gothic revival' style which not not genuine but copied the external appearance of the medieval gothic cathedrals. The US has a lot of gothic revival churches and cathedrals.
Historic Mexican organs were built in the Spanish style. If this does not answer your question, you need to re-phrase it.
It was built in the Gothic style.