Start at the Galleria Spada where you will see the world-famous Galleria Prospettica built by the architect Borromini in the 17th-century. Marvel at how the corridor looks wide and long but it is just an optical illusion. Walk a little further and enter the gothic church of Santa Maria Sopra la Minerva home to Michelangelo's Standing Christ. Nearby in Piazza Navona, see breathtaking paintings by Caravaggio that will change your perception of light and darkness. Finally admire the authentic works by Raphael, located in the Chigi headquarter church. Amaze your friends and family with knowledge gained from this off-the-beaten-track walking tour.