Devotion to the Sacred Heart helps us return Jesus's love with gratitude and glory. The symbol of the Sacred Heart has been popular since the 11th century, and St. Margaret Mary's visions in 1673 further spread the devotion. The Sacred Heart Basilica in Paris, built as an expiatory church, is a testament to this devotion. Its main artwork, "The Triumph of the Sacred Heart of Jesus," is one of the largest mosaics in the world and depicts scenes of homage to the Sacred Heart.