St Peter's Basilica

The largest church in the world and the centre of the Catholic Church, built over the tomb of St Peter. Inside are Michelangelo's Pietà, Bernini's bronze canopy, and the dome designed by Michelangelo, which you can climb for a view over St Peter's Square and Rome.

Entry is free, but queues for the security check are long; go early. Dress modestly. The Pope holds a general audience most Wednesday mornings; tickets are free but must be requested.