The term "Petersdoms" refers to the St. Peter's Basilica, a renowned church located in Vatican City. It is one of the largest and most important churches in the world, known for its stunning architecture and artistic masterpieces. The basilica is a significant pilgrimage site for Catholics and is often associated with the Pope. Constructed over a period of more than a century, the basilica features contributions from famous artists such as Michelangelo and Bernini. Its iconic dome dominates the skyline of Rome, and the interior is adorned with intricate mosaics, sculptures, and the famous Pietà statue.