Italy, Venice. St. Mark's Cathedral, Basilica di San Marco. St. Mark's Cathedral is located in St. Mark's Square. It was built in 829 and rebuilt in 1043 - 1071. Because St. Mark, a disciple of Jesus and author of the Bible (the Gospel of Mark), was buried here, the cathedral was named after St. Mark. St. Mark's Cathedral was the largest church in medieval Europe, the most famous church in the Christian world, the pride of Venetians, and the starting place of the Fourth Crusade. St. Mark's Cathedral is a classic masterpiece of Venice's architectural art, as well as a treasure house of rich works of art.