VATICAN CITY —
Pope Benedict XVI left the Vatican for the last time as pontiff on Thursday, flying by helicopter to the Vatican's vacation retreat hours before becoming the first pontiff in 600 years to resign.
As his closest aide wept by his side, Benedict bade farewell to Vatican officials gathered in the San Damaso courtyard of the Apostolic Palace, a corps of Swiss Guards standing by at attention.
Benedict then traveled by car to the helipad on the top of the hill of the Vatican gardens and boarded a helicopter along with his secretary, Monsignor Georg Gaenswein, for the 15-minute trip to Castel Gandolfo.
Bells tolled as they took off and circled St. Peter's Square, where well-wishers held up signs saying "Thank You."
Before leaving, Benedict held his final audience with his cardinals and pledged his "unconditional reverence and obedience" to his successor, a poignant and powerful message to close out his eight-year pontificate which officially ends at 8 p.m. Thursday.
In an unexpected address inside the Vatican's frescoed Clementine Hall, the pope appeared to be trying to defuse concerns about his future role and the possible conflicts arising from the peculiar situation of having both a reigning pope and a retired one.
Benedict also gave a final set of instructions to the "princes" of the church who will elect his successor, urging them to be united as they huddle to choose the 266th leader of the world's 1.2 billion Catholics.
"May the College of Cardinals work like an orchestra, where diversity — an expression of the universal church — always works toward a higher and harmonious agreement," he said.
It was seen as a clear reference to the deep internal divisions that have come to the fore in recent months following the leaks of sensitive Vatican documents that exposed power struggles and allegations of corruption inside the Vatican.