The Catholic Church is the largest Christian denomination in the world, with over a billion members. It is led by the Pope, who is based in Vatican City. The Church teaches that it is the one true church founded by Jesus Christ and emphasizes the importance of the sacraments, including Baptism and Eucharist. The Catholic Church has a rich history that spans nearly two thousand years. It plays a significant role in global humanitarian efforts, education, and social justice. The Church's beliefs are outlined in the Catechism of the Catholic Church, which serves as a guide for its teachings and practices.