Construction on the cathedral began in 1063 (1064 according to the Pisan calendar of the time) by the architect Buscheto, and expenses were paid using the spoils received fighting against the Muslims in Sicily in 1063. It includes various stylistic elements: classical, Lombard-Emilian, Byzantine, and Islamic, drawing upon the international presence of Pisan merchants at that time. In the same year, St. Mark's Basilica began its reconstruction in Venice, evidence of a strong rivalry between the two maritime republics to see which could create the most beautiful and luxurious place of worship.