According to the annals, at the beginning of the XIII century, the inhabitants of the city-state of Siena, which was the main competitor and enemy of Florence, "called on their leaders to build a temple more magnificent than that of their neighbors." Thus, between 1215 and 1263, the Duomo of Siena was founded on the site of the old temple according to the plan of the Gothic master Niccolò Pisano. Today, this majestic temple is the main attraction of the city