Sacred Destinations Destinations St. Peter's Basilica St. Peter's Basilica Photos 25797 × share full URL share short URL embed link code photo 105 of 126 Previous | Next Altar of St. Thomas Altar of St. Thomas in the left transept. The altarpiece is a mosaic executed in 1822 based on a painting by V. Camuccini (1806). Under the altar is the tomb of Pope St. Boniface IV. Credit: Holly Hayes
