Here are three significant landmarks in the Piazzetta di San Marco. First, the 323 foot, brick St. Mark’s Campanile. This historic icon was built in 1514 and reconstructed in 1912. Below it is the 16th century Loggetta by Jacopo Sansovino. The same architect designed the Biblioteca Marciana on the left. This Library of St. Mark’s contains over one million historic books and 13,000 manuscripts.