The church, in neo-Romanesque style, made of brick and travertine in the early years of 900, was commissioned by Pope Pius X to the architect Mario Ceradini. The imposing façade is divided into three round-arched portals with travertine slabs. The central one is adorned in the upper part by two large circles of marble, a polyphorous window and mosaics that overlook the coats of arms of Pius X. The upper mosaic represents the Crucifixion, with Christ dressed and open eyes, Mary Magdalene and St John, While behind them are two soldiers. The lower mosaic, rebuilt in 1924, represents the Madonna between Saints Peter and Paul.