Those Vatican walls? Designed to repel Muslims

Those Vatican walls? Designed to repel Muslims:

"The pope’s sovereign city-state, Vatican City, is surrounded by giant walls.

What’s more, the walls were specifically built by a prior pope to repel Muslims.

History shows back in 846, Muslim raiders known as the Saracens looted Old St. Peter’s Basilica and the Papal Basilica of St. Paul outside the walls. The pirates took priceless treasures from the shrines.

Shocked by the sack of some of the most sacred sites in Christendom, Pope Leo IV created the Leonine Wall, completely surrounding the Vatican Hill. Additional defenses were added in the 15th and 16th centuries."