image source: www.zimbio.com
St John Lateran or the Lateran Cathedral is the mother church of the Catholic Church. It is the seat of the Bishop of Rome, the Pope.
The site of the basilica was picked by the Emperor Constantine about 313AD at the same time as the Edict of Milan, which made the church the official religion of the empire.
Above the main altar there is a large casket which contains two full figures. Inside these, which look like coats of armour, are the heads of St Paul and St Peter.
There is also a beautiful small chapel at the rear of the altar. It has old monastic type seats, and is very private. I was at Mass there once.
If ever you are in Rome do not miss a chance to see St John Lateran. And when you are at Mass today remember the pope shall be saying Mass in the mother church as well.