San Pietro in Ciel d'Oro
San Pietro in Ciel d'Oro (Italian for "Saint Peter in Golden Sky") is a Catholic basilica (and a former cathedral) of the Augustinians in Pavia, Italy, in the Lombardy region. Its name refers to the mosaics of gold leaf behind glass tesserae that decorate the ceiling of the apse. The plain exterior is of brick, with sandstone quoins and window framing. The paving of the church floor is now lower than the modern street level of Piazza San Pietro in Ciel d'Oro, which lies before its façade.