Joseph Ratzinger gives a theology lecture at the University of Freising during the summer semester in 1955
US President George W Bush met Pope Benedict on a visit to the Vatican in June 2008Pope Benedict met former Cuban leader Fidel Castro during a visit to Cuba in March 2012A frail Benedict said mass in the Vatican yesterdayBenedict plays piano at his summer residence in July 2006 in Les Combes, Val D'Aosta, ItalyPope Benedict waves to thousands of pilgrims in Hyde Park, London, in September 2010, during the first state visit to the UK by a PontiffCardinal Ratzinger swings an incense burner during John Paul II's funeral in April 2005Pope Benedict XVI waves to the crowd in St Peter's Square after the announcementA photo taken in 1943 during World War II shows Joseph Ratzinger as a German Air Force assistantJoseph Ratzinger (back row right), with his father Josef, mother Maria, sister Maria and brother Georg in 1951Cardinal Joseph Ratzinger was a close aide to his predecessor John Paul IIHabemus Papam! Joseph Ratzinger became Pope at the age of 78 in April 2005Lightning strikes St Peter's dome at the Vatican just hours after the Pope announced his retirement
