Skip the Line: St Peter's Basilica Walking Tour Including Vatican Mosaic Studio. Walk through the heart of Vatican City and the 16th-century Mosaic Studio (Studio del Mosaico). You’ll meet the studio director and artists who work to restore the mosaics of Saint Peter's Basilica after a guided walking tour of the important papal church. With skip-the-line access, you’ll have 2.5 hours to experience the site, including Michelangelo’s Pietà and the tomb of St Peter. Enjoy personal attention from your expert guide on this small-group tour, limited to 20 people. Book this Tour and Save 10%: Skip the Line: St Peter's Basilica Walking Tour Including Vatican Mosaic Studio.