Climbing the dome of St. Peter's Basilica is one of the most memorable experiences in Rome, offering unparalleled views of the Vatican City and the sprawling cityscape of Rome. The ascent involves 551 steps, winding through narrow, sometimes steep passageways, which may not be suitable for everyone. Individuals with mobility issues, heart conditions, or claustrophobia should carefully consider whether this climb is right for them. Plan to arrive at least 30 minutes early to account for security checks and to ensure you have enough time to enjoy the experience.