There have been several popes who have come out with various famous catechisms: Pope Pius V issued the Catechism of the Council of Trent in the 16th century. Pope John Paul II issued the Catechism of...
Pope Julius II became known as 'The Warrior Pope'
In 350 A.D. Pope Julius I decreed that from that time forth the 25th of December would be acknowledged as the date of the Nativity - Christmas.
pope pius V
You mean a circle of light over saint's head? It is aureole, also called 'halo' or 'glory'.
Visit Brugge, Belgium
Visit the Monkey Temple of Jaipur in India
Visit the Popes' Palace of Avignon in France
Carl Pope on Nuclear Power