Pope Benedict XVI waves to the faithful gathered at the Colosseum during the Way Of The Cross procession on Good Friday April 6, 2012 in Rome, Italy.

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Pope Benedict XVI delivers his annual 'Urbi Et Orbis' blessing from the central balcony of St. Peter's Basilica on December 25, 2010 in Vatican City, Vatican.

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Pope Benedict XVI reads papers in his summer residence on July 26, 2010 in Castel Gandolfo, near Rome, Italy. The Pontiff will visit England from September 16 - 19.

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Pope Benedict XVI attends a meeting with British Prime Minister David Cameron at Archbishop's House, near Westminster Cathedral on the third day of his State Visit on September 18, 2010 in London, England.

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Pope Benedict XVI chats with French President Nicolas Sarkozy during a meeting at his private library on October 8, 2010 in Vatican City, Vatican.

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Pope Benedict XVI (R) walks with Prince Philip, Duke of Edinburgh (L) as he arrives at the start of his four day state visit to the United Kingdom at Edinburgh Airport on September 16, 2010 in Edinburgh, Scotland.

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Pope Benedict XVI meets Kuwait President Sheikh Sabah al-Sabah at his library on May 6, 2010 in Vatican City, Vatican.

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Cardinal Joseph Ratzinger, 72, is the vice-dean of the College of Cardinals and was once archbishop of Munich. Known as 'the Panzer Cardinal,' the conservative Ratzinger is powerful in the Vatican.

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Pope Benedict XVI (R) replaces his zucchetto as he meets with Queen Elizabeth II and Prince Philip, Duke of Edinburgh during day one of his four day state visit to the United Kingdom at Holyrood House on September 16, 2010 in Edinburgh, Scotland.

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Pope Benedict XVI walks in the gardens of his summer residence on July 26, 2010 in Castel Gandolfo, near Rome, Italy. The Pontiff will visit England from September 16 - 19.

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Pope Benedict XVI waves to the faithful as he arrives in St. Peter's Square to lead the John Paul II Beatification Ceremony on May 1, 2011 in Vatican City, Vatican.

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Pope Benedict XVI departs after he gave a historic speech at the Bundestag on September 22, 2011 in Berlin, Germany. This was the first occasion ever that a Pope has addressed the Bundestag in person.

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Pope Benedict XVI attends a concert at the Paul VI hall, for the fifth anniversary of his pontificate on April 29, 2010 in Vatican City, Vatican.

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Pope Benedict XVI holds a baby as he arrives sitting in the papamobil for leading a catholic mass in front of 70,000 visitors at Olympiastadion stadium on September 22, 2011 in Berlin, Germany.

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Pope Benedict XVI travels to Assisi by train on October 27, 2011 in Assisi, Italy.

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Pope Benedict XVI kisses a baby as he arrives in Hyde Park on September 18, 2010 in London, England.

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Pope Benedict XVI arrives sitting in the papamobil for leading a catholic mass in front of 70,000 visitors at Olympiastadion stadium on September 22, 2011 in Berlin, Germany.

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Pope Benedict XVI delivers a speech before leaving Germany at Lahr Black Forest airport on September 25, 2011 near Freiburg im Breisgau, Germany.

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Pope Benedict XVI waves as he leaves his old apartment and prepares to move into the Vatican April 20, 2005 in Vatican City.

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The Ratzinger family from is pictured in 1938 from right to left; father Josef , sister Maria, mother Maria and brothers Georg and Joseph. Cardinal Joseph Ratzinger was elected Pope April 19, 2005 and has taken the name Benedict XVI.

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Pope Benedict XVI waves to the faithfuls as he leaves St. Peter's Basilica at the end of the Christmas night mass on December 24, 2012 in Vatican City, Vatican.

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Pope Benedict XVI celebrates baptisms in the Sistine Chapel on January 8, 2012 in Vatican City, Vatican.

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Pope Benedict XVI meets with US Defence Secretary Leon Panetta at the end of the General Audience at the Paul VI Hall on January 16, 2013 in Vatican City, Vatican.

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Pope Benedict XVI meets Haitian President Michel Martelly at his private library on November 22, 2012 in Vatican City, Vatican. President Martelly is concluding his European tour today.

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Theology Professor Joseph Ratzinger is shown at the University of Freising in his private quarters in 1959. Cardinal Joseph Ratzinger was elected Pope April 19, 2005 and has taken the name Benedict XVI.

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Germany's Cardinal Joseph Ratzinger, acting as substitute for the Pope, showes the gospel book during the celebration of the Easter Vigil service in Saint Peter's Basilica March 26, 2005 in Vatican City.

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Pope Benedict XVI (L) and Cuban President Raul Castro (R) wave to the media after a meeting at the Consejos de Estado on the second day of his three day visit on March 27, 2012 in Havana, Cuba.

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Newly elected Pope Cardindal Joseph Ratzinger, Pope Benedetto XVI gestures to the crowd in St. Peter's square April 19, 2005 in Vatican City. The 265th Pope will lead the world's 1 billion Catholics.

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German Cardinal Joseph Ratzinger leads a final Mass for papal election before the start of the conclave in Saint Peter's Basilica April 18, 2005 in Vatican City.

Pope Benedict XVI, Cardinal Joseph Ratzinger of Germany, waves from a balcony after he was elected by the conclave of cardinals April 19, 2005 in Vatican City. The 265th Pope will lead the world's 1 billion Catholics.

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