Now, the most interesting thing about this church is that it has a miracoulous statue of St. Judas Tadeus, which has inspired a weird cult, now second only to the Virgin of Guadalupe.
St. Judas Tadeus (or, popularly, San Juditas) is the patron of lost and difficult causes.
He's always been popular. But in the last two decades the cult has flourished, specially among the lowest urban classes, and an urban tribe known as "los chakas" (young, unemployed, often drug addicts, fond of raeggeton music).
So every 28th day of the month, and specially on October 28th, thousands (or ten of thousands) of San Juditas followers visit the church to ask for a favor (get a job, leave drugs, get married, get pregnant, have a friend, brother or son out of jail, etc). And they carry images of the saint.
As you see, San Juditas travels by subway.
The bigger the image, the bigger the favor the saint has to do:
He can be really big: