St Peter’s Basilica can accommodate 20,000 people. It measures 190 m (624 ft) long and the central nave is 46 m (150 ft) tall. The dome stands 136 m (447ft) tall. Inside, visitors will find extremely impressive pieces of art, including St. Peter’s Baldachin, a large bronze baldachin designed by Bernini, The Pietà, a sculpture by Michelangelo, and t...