The Basilica of Saint Peter is a renowned church located in Vatican City, the spiritual center of the Roman Catholic Church. It is one of the largest churches in the world and is considered a masterpiece of Renaissance architecture. The basilica was built over the tomb of Saint Peter, one of Jesus' apostles and the first pope. Construction of the basilica began in 1506 and was completed in 1626, featuring contributions from famous artists like Michelangelo and Bernini. The dome, designed by Michelangelo, is a prominent feature of the skyline. The basilica attracts millions of visitors each year, making it a significant pilgrimage site.