Nave The measurements of the largest churches in the world are recorded in brass letters on the center of the floor. The statues on the side pillars are among the 39 in the basilica of saints that founded religious orders.
The Ceiling is also all decorated.
Fontana dei Quattro Fiumi - Fountain of the four Rivers (the Danube, the Ganges, the Nile, and the Rio de la Plata) with Egyptian obelisk, in the middle of Piazza Navona
