Many steps need to travel to get on the top of the dome, a narrow corridor and at an angle on the inside of the dome, endless spiral staircase that seems to never come. Then in the end here, the wonder of view of Rome. A corridor runs around the dome, one inside and one outside, and around this corridor, unfortunately or fortunately, there is provided a safety net all around, but that does not stop between a slot and the other to capture the Eternal City.