St. Peter's crucifixion is portrayed in a mural by Michelangelo in the Pauline Chapel of the Apostolic Palace at the Vatican. Pope Benedict XVI is scheduled to inaugurate the chapel July 4 after a five-year, $4.6 million renovation. (CNS/courtesy of the Vatican Museums) VATICAN CITY (CNS) -- Work on the Pauline Chapel in the Apostolic Palace was not so much a restoration as a restitution of the pope's prayer space, said the director of the Vatican Museums. Containing the last two murals Michelangelo ever painted, the private papal chapel had been under scaffolding for more than five years; it was...