Vatican Stairs In Rome, inside Vatican City, the Vatican Museums are some of the greatest on the globe. The above spiral staircase inside one of those museums is the most recognizable spiral stairway in the world. In the late ‘20s, Pope Pius XI commissioned the monumental project and entrusted the sculptor Maraini with the creation of the model. Marinelli Foundry cast it in bronze. Pope John Paul II later commissioned the Marinelli Foundry for the 340 meters of bronze handrail.