Pisa is an Italian city of Tuscany known above all for its famous leaning tower. Already out of axis at its completion, in 1372, the 56 m tall white marble cylinder is nothing more than the bell tower of the marble Romanesque cathedral that rises next to it, in Piazza dei miracles. The square itself hosts the monumental cemetery and Baptistery, where every day non-professional singers test themselves with its famous acoustics.