In 1837, the cathedral was established with the celebration of the first Mass. It is the mother church of the Roman Catholic Diocese of Providence. The structure is made from brown sandstone and is a standing example of architectural brilliance. Inside the church, green marble is extensively used. Oil paintings and statues form an integral part of this church. The stained glass windows, depicting scenes from testaments, take you back in time. It also has the largest organ featuring 6,616 pipes.