Basilica de San Juan de Letran

Javier Corbo has added a photo to the pool:

The Papal Archbasilica of St. John Lateran (Italian: Arcibasilica Papale di San Giovanni in Laterano) is the cathedral of the Church of Rome, Italy, and the official ecclesiastical seat of the Bishop of Rome, who is the Pope. Officially named Archibasilica Sanctissimi Salvatoris et Sanctorum Iohannes Baptista et Evangelista in Laterano (English: Archbasilica of the Most Holy Saviour and Sts. John the Baptist and the Evangelist at the Lateran", it is the oldest and ranks first among the four Papal Basilicas or major basilicas of Rome (having the cathedra of the Bishop of Rome).