In the southern entry hall, the Zen Chapel honors Cardinal Giambattista Zen. It displays a 5th-century bronze arched gate from Constantinople and a mosaic cycle illustrating St. Mark's life in 12 scenes. These scenes include the angelic prophecy about St. Mark's burial in Venice and the divine right of the church to possess his relics. Explore other chapels like Chapel of Saint Giovanni, illustrating St. John's life, and the Cappella della Madonna Nicopeia, home to the renowned Byzantine icon of the Madonna Nicopeia.