Three days lets you split Rome into ancient Rome, Vatican City and the historic centre — the same core areas GetYourGuide consistently highlights.
Day 1: ancient Rome
Start with the Colosseum, then continue through the Forum and Palatine Hill. Treat them as one major historical block rather than adding another timed museum immediately afterwards.
Day 2: Vatican City
The Vatican Museums and Sistine Chapel deserve a dedicated block plus time for security. St Peter's Basilica depends on the option, so recheck the exact GetYourGuide product.
Day 3: historic centre
Link the Pantheon, Piazza Navona and Trevi Fountain with unhurried central streets. Save Trastevere or a ticket-free evening walk for later.