The interior of the new church was painted in the mixed Catholic-Orthodox manner, sometimes described as the result of the "picturesque illustration of the confusing encounter of the East and West in Belgrade". Virgin Mary was presented in both traditions, in the Orthodox one in the lower section and in the Western Marian iconography in the upper section. She is surrounded by both the Catholic and Orthodox saints, including the father of the Serbian church, Saint Sava. Remaining from the French Assumptionists, there is a Gallic rooster on the cross above the old belfry. Saint John of Capistrano, whose name bears the monastery, was chosen because of his participation in the successful defense of the city during the 1456 Siege of Belgrade. He personally commanded the detachment consisting of the Crusaders and strongly pushed for the all-European Crusade against the Ottoman Turks.