St. Peter's Basilica
Built over a span of more than 100 years, St. Peter's Basilica is also the largest church in the world. This impressive architectural monument is also often referred to as "the greatest church in Christendom" and is visited by thousands of tourists every month.
Fun fact
The smallest army in the world, the Swiss Guard, was established in 1506 and still exists to protect the Pope, the Vatican and St Peter’s Basilica
