The Cathedral of Rome, the first Christian church in the city, the ecumenical mother church*, dedicated on 9 November 324 by Sylvester I, Bishop of Rome. We did not make it over for the dedication celebration because of heavy rain and homework… next year! 

*referring to church as the building, rather than the people of God. In the later case, the mother church would be the local church of Jerusalem and the universal church catholic!

St. Giovanni in Laterano, Cathedral and Major Basilica of Rome

Cathedra Romana, the Chair of the Bishop of Rome

Adoration chapel, with golden pillars from the Temple of Jupiter (Zeus)

High altar and baldacchino, with relics of Peter and Paul in the golden statue/reliquaries