One of the largest churches in the world is Santa Maria del Fiore, Florence’s Cathedral. The monument is a testament to religion, faith, and worship but also to political ambition. The advancements in building and construction turned the architecture of the Middle Ages to become one of the Renaissance: the Modern Architecture. The Cathedral, wonderfully decorated with marbles and frescoes, has been the (in)voluntary stage of feuds, conspiracies and assassinations. Walk with us to discover up close one of the biggest realized ambitions of Florence: to become the New Jerusalem.