In 1627, Bernini became the head architect of St. Peter's Basilica. His first project was to oversee the decoration of the great crossing piers of the church. Four different sculptors – including Bernini – each produced a large-scale sculpture of a saint. But it was Bernini's 4m tall marble statue of "St. Longinus" that stole the show. Its dramatic gesture, expression and drapery theatrically portray the spiritual conversion of the Roman soldier at the foot of the cross after piercing Christ's side with his lance.