What is the world biggest church?

The Papal Basilica of St. Peter in the Vatican is the largest church in the world. Renaissance artists such as Michelangelo, Carlo Maderno and Gian Lorenzo Bernini designed this church. St. Peter's Basilica is also believed to be the burial place of Jesus' disciple and the "first pope", the apostle Peter.

The church is central to the Catholic faith, as it is also the place where it buries popes. The dome of the basilica is very conspicuous in the sky of Rome, and both the interior and exterior of the church have complex and unique architectures in a cruciform shape, which are meant to symbolize the crucifixion of Jesus.

This church covers an area of 15,160 square meters.