angels in the left oval and in the pinnacles angels with God's attributes were completed by Ventura Salimbeni. The reliquary on the altar holds the right arm of the polish Jesuit St. Andrew Bobola, martyred in 1657 and canonized by Pius XI in 1938. The imposing and luxurious St. Ignatius Chapel with the saint's tomb is located on the left side of the transept and is the church's masterpiece, designed by Andrea Pozzo between 1696 and 1700. The altar by Pozzo shows the Trinity on top of a globe. The lapis lazuli, representing the Earth, was thought to be the largest piece in the world but is actually mortar decorated with lapis lazuli. The four lapis lazuli-veneered columns enclose the colossal statue of the saint by Pierre Legros. The latter is a copy, probably by Adamo Tadolini working in the studio of Antonio Canova. Pope Pius VI had the original silver statue melted down, ostensibly to pay the war reparations to Napoleon, as established by the Treaty of Tolentino, 1797. Originally the project was designed by Giacomo della Porta, then by Cortona; but ultimately Pozzo won a public contest to design the altar. A canvas of the Saint receives the monogram with the name of Jesus from the celestial resurrected Christ attributed to Pozzo. The urn of St. Ignatius is a bronze urn by Algardi that holds the body of the saint; below are two groups of statues where Religion defeats heresy by Legros (with a putto – on the left side – tearing pages from heretical books by Luther, Calvin and Zwingli), and Faith defeats idolatry by Jean-Baptiste Théodon. The St. Ignatius Chapel also hosts the restored macchina barocca or baroque machine of Andrea Pozzo. During daytime the statue of St. Ignatius is hidden behind a large painting, but every day at 17.30 triumphal music is played and the painting is lowered by the machine into the altar, revealing the statue, with spotlights used to highlight various aspects of the Ignatian Altar, while describing aspects of the history and spirituality of the Society of Jesus. The last chapel on the far end of the nave, to the left of the high altar, is the Chapel of the Madonna della Strada. The name derives from a medieval icon, once found in a now-lost Church in the piazza Altieri, venerated by Saint Ignatius. The interior is designed and decorated by Giuseppe