No, it is not a sculpture. It was built piece by piece.
The Saint peters basilica, milan cathedral and the basilica of mary of the flower
Saint Peter's Square is located directly in front of St. Peter's Basilica in Vatican City.Find out more about St. Peter's Basilica at http://vaticanart.net/st-peters-basilica-architecture
The dome of Saint Peter's which is 452 feet at its highest.
Basilica Papale di San Pietro was started in 1506 and completed in1626 .
St. Peters Basilica is located in Vatican City, Rome.Vatican City is also the worlds smallest country.Find out more about St. Peter's Basilica at http://vaticanart.net/st-peters-basilica-architecture
Nobody is buried in the altar at Saint Peter's, however, the altar is built directly over the tomb of St. Peter, the first apostle.
Saint Paul's basilica is located in Rome.
Michelangelo and Bernini
If you mean, St. Peter's Basilica, it is not a Cathedral, then the pope in summer 2012 is Pope Benedict XVI. His Cathedral is St. John Lateran.
Basilica of Saint Mary of the Chorus was created in 1774.
Saint-Michel Basilica-Cathedral was created in 1959.
Treasury of the Basilica of Saint Servatius was created in 1070.