This photo is of the cloisters inside Rome's San Giovanni in Laterano, taken on a cool but sunny January day.
I wasn't extremely impressed with the basilica itself, but thought the cloisters were charming (if a bit worse for wear.) I couldn't believe how green it was, even in January. And a bit cold, I have to admit.
San Giovanni in Laterano is also known as the Basilica of St. John Lateran and is the cathedral of the Diocese of Rome, of which the Pope is bishop. The Catholic Church has named it "The Mother of All Churches" and the cathedral has been dedicated to Christ, and to Sts John the Baptist and John the Evangelist.
Apparently, San Giovanni is the first cathedral of Rome, where Emperor Constantine allowed the Pope to set up the Episcopal chair after 312. The Popes lived in the Lateran palace until Clement V (1305–1314) transferred the papal seat to Avignon. After the return of the Pope to Rome in 1377, the Vatican palace was chosen as the papal residence.