sentences:  The keeping of stations ceased entirely during the Avignon papacy, and left their trace only as notations in the Roman Missal.After the Lateran Treaty of 1929 solved the Roman Question, Pope Pius XI and Pius XII encouraged a return to the ancient tradition by attaching indulgences for visiting the station churches of Lent and Easter.Concrete gestures on the part of Pope John XXIII and Paul VI also began a revival, as John XXIII was the first pope in modern times to celebrate Ash Wednesday at Santa Sabina, and Paul VI visited Sant'Eusebio on its station day in 1967.