Il Gesù is the mother church of the Jesuit order, located in Rome, Italy. Built in the 16th century, it is considered one of the most important examples of Baroque architecture and served as a model for many other Jesuit churches around the world. The church houses the tomb of St. Ignatius of Loyola, the founder of the Jesuits, and features stunning frescoes, ornate decorations, and the famous ceiling painting The Triumph of the Name of Jesus .