About St. Mark's Church #St. Mark's Church was built in 336 by Pope Mark in memory of St. Mark, the author of the Bible Gospel. The remains of Pope Mark are stored under the altar. After many times of construction, the style of the church retained the 9th century ring mosaic, blue and gold roof lions like the family emblem of Pope Paul II in the 15th century, while other decorations such as the Jade Ring Gallery were the art of the late 18th century Baroque. Like Rome itself, each section of the artistic style left its mark in this church, which is worth visiting.