Indicative of immigration trends, several Catholic churches now conduct masses in two or more languages. St. Patrick's Church, a Catholic church in Lawrence and once an Irish bastion, has celebrated Spanish masses on Sundays since 1999. A mass in Vietnamese is also offered every other week. St. Mary's of the Assumption Parish is the largest Catholic parish in Lawrence by Mass attendance and number of registered parishioners. It has the largest multi-lingual congregation in the city and has been offering Spanish masses since the early 1990s.