It is one of the Rome’s cathedrals, founded by Constantine in the IV century. It was destroyed and reconstructed more times. The Basilica’s actual shape dates back to the XII century. In the course of centuries, several pontifices added spaces, decorations and works of art. An interior restoration was made by Borromini, according to Innocenzo X’s will, ... More> on the Jubilee occasion in 1650. The basilica’s imposing facade, made out of travertine,overlooks “Piazza di Porta San Giovanni” and was constructed in 1735 by Alessandro Galilei, a famous architect. The near by areas are worth visits; Colosseo and Santa Maria Maggiorre.