18 This happy new juridical and spiritual position which that achievement, destined to make an indelible mark in history, has secured and sealed for Italy and for the whole Catholic world, never appeared to Us so impressive in its unifying effects as when, from the lofty loggia of the Vatican Basilica, We opened and raised Our arms and Our hand for the first time in blessing over Rome - Rome, the Seat of the Papacy and Our own dear birthplace - over Italy reconciled with the Church, and over the peoples of the entire world.
Source: Summi Pontificatus (Vatican.va)