Santa Maria in Vallicella, also called Chiesa Nuova, is a church in Rome, Italy, which today faces onto the main thoroughfare of the Corso Vittorio Emanuele and the corner of Via della Chiesa Nuova. It is the principal church of the Oratorians, a religious congregation of secular priests, founded by St Philip Neri in 1561 at a time in the 16th century when the Counter Reformation saw the emergence of a number of new religious institutes such as the Jesuits, the Theatines, and the Barnabites. These new congregations were responsible for several great preaching churches built in the Centro Storico, the others being Sant'Andrea della Valle (Theatines), San Carlo ai Catinari (Barnabites), and The Gesù and Sant'Ignazio (Jesuits).