La Cupola is situated in St. Peters Square, i feel it is a must when visiting Rome.
There are two options for getting to the top,walking 550 steps or taking the lift and then walking 320 steps. We took the option of walking 550 steps and it was well worth it.
The Cupola opens at 8am Monday - Saturday and i suggest getting there at 8am to beat the crowds.
La Cupola, is located on the roof of St Peters.