The Catholic Church is the largest Christian organization in the world, with over a billion members across every continent. Catholics believe Jesus Christ founded their church about 2,000 years ago when he chose the apostle Peter as its first leader.

The Catholic Church is led by the Pope, who lives in Vatican City, a tiny independent country in Rome, Italy. Catholics believe the Pope is the successor to Saint Peter and serves as the spiritual leader of all Catholics worldwide. Under the Pope, bishops lead Catholics in different regions, and priests serve in local parishes where Catholics gather for Mass, their main worship service.

Catholics follow the Bible and also honor traditions passed down through centuries. They celebrate seven special ceremonies called sacraments, including baptism, communion, and confirmation. Many Catholic churches are known for their beautiful architecture, stained glass windows, and religious art. Catholics also venerate Mary, the mother of Jesus, and pray to saints, meaning they ask these holy people to intercede with God on their behalf.

The Catholic Church has played a major role in Western history, founding universities, hospitals, and schools around the world. It has also been involved in significant historical events and controversies throughout the centuries, from preserving ancient texts during the Middle Ages to participating in the exploration of new lands.