During the first half of his career, he spent years traveling across Northern Italy and was influenced by the Florentine styles he saw there, causing this stage to be called his Florentine Period. After which, in 1508, he moved to Rome where he continued to work. Many of his commissions came from the Vatican, including the Apostolic Palace, which brought about one of his most famous works, School of Athens.[2] Due to his relationship with the church, he and Michelangelo were fierce rivals throughout both of their careers, and often competed for the same commissions.