St. Peter's Basilica 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, known for its stunning architecture and artistic masterpieces. The basilica was designed by famous architects, including Michelangelo, who created its iconic dome. Construction of St. Peter's Basilica began in 1506 and was completed in 1626. The church is built over the site believed to be the burial place of Saint Peter, one of Jesus' apostles and the first pope. It attracts millions of visitors each year, making it a significant pilgrimage site.