Built on the ancient ruins of a Roman cemetery, where 11,000 virgins associated with the legend of Saint Ursula were supposedly buried. Inside the church is a reliquary featuring the bones of these martyred girls. The story of Saint Ursula is now considered to be fiction. It’s thought that there were originally 11 girls accompanying St. Ursula but over the years the letter M was mistaken for the Roman numeral for 1000.