Venice has only one square or piazza: St.Mark’s Square, a 170 meter-long trapezoid which differs from all other squares that are called "campi" (fields).
The huge prisons were made of large marble and Istrian stone blocks and were intimidating and frightening. Still today we don’t know how they were assembled.
The article The new prisons comes from Venice City Tours - Blog.
You are now on the Ponte della Paglia, the Bridge of Hay, where boats would drop off stacks of hay for the horses’ stables inside the Palazzo Ducale on the ground floor.
St. Mark's Square (San Marco, in Italian) is one of the most important, beautiful and fascinating places in Italy, famous worldwide for its beauty, its magic and its architectural integrity.
The building of St.Mark’s Bell Tower (once used as a lighthouse) begun in XI century under the Doge Pietro Tribuno but the current look was reached only between 1511 and 1514.