Santa Maria in Vallicella, also called Chiesa Nuova, is a church in Rome, which today faces onto the main thoroughfare of the Corso Vittorio Emanuele. 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 organisations such as the Society of Jesus (Jesuits), the Theatines and the Barnabites.