The cathedral is named Immaculate Conception. They started filling in the area where it is built in 1856, because it was swampland. The construction of the building was started in 1875 and finished in 1899. One of the front towers is from 1904 and the other 1920. It was up graded to a Basilica in 1937.
Something different about the cathedral is that in the days they were building it, there was a Jewish family living in Mazatlan. They donated a large amount of money (not specified) to help the locals continue building the church. The family did not want to be mentioned or the amount either.
Anyways, in appreciation, they put the star of david in all the top windows. You will see the window has an arch, below the arch is the star of david.
I always thought that it was the only one, but someone told me that in Florence Italy there is another one and it is true.
But not many churches like this!
ANother thing about the cathedral is the pipe organ. There are only 2 of these left. One in Germany in a museum (cannot be fixed) and the one in Mazatlan which can be fixed.
If you would like to donate some money towards the restoration of the cathedral and the pipe organ , inside you will find some boxes where you can donate.
Enjoy it while in Mazatlan.