The central marble altar and its three-spired reredos (or altar piece) were sculpted in Rome by Victor Fucignas from Carrara marble. The small columns that adorn the altar are cut from yellow marble found only in Siena, Italy.
There are six sculptures: On the far left is Saint Peter, holding the keys of the kingdom. At the far right is Saint Paul, holding the book of the Epistles, which he wrote. The four smaller sculptures represent the four Evangelists with their attributes: (from left to right): Matthew with the sack of coins (he had been a tax collector), Luke with the ox, John with the eagle, and Mark with the lion.