When he was 50 years old, Juan Diego was baptized by a Franciscan priest. On 9 December 1531, when Juan Diego was on his way to morning Mass, the Blessed Mother appeared to him on Tepeyac Hill, the outskirts of what is now Mexico City. She asked him to go to the Bishop and to request in her name that a shrine be built at Tepeyac, where she promised to pour out her grace upon those who invoked her. The Bishop, who did not believe Juan Diego, asked for a sign to prove that the apparition was true. On 12 December, Juan Diego returned to Tepeyac. Here, the Blessed Mother told him to climb the hill and to pick the flowers that he would find in bloom. He obeyed, and although it was winter time, he found roses flowering. He gathered the flowers and took them to Our Lady who carefully placed them in his mantle and told him to take them to the Bishop as “proof”. When he opened his mantle, the flowers fell on the ground and there remained impressed, in place of the flowers, an image of the Blessed Mother, the apparition at Tepeyac.