The Old bridge or Ponte Vecchio, the oldest of Florence's six bridges, is one of the city's best known images. Probably going back to Roman times with its stone pillars and wooden planks; it was built in stone but then newly destroyed by a flood in 1333. It was built again twelve years later. The five arches became three and the main part was widened. The shops, housed under the porticos, first belonged to the Commune which then rented them out. But later on, towards the 15th century, they were sold to private owners and began to change through subsequent additions, raised parts and external terraces, extending towards the river and altering the original architecture in an anarchical, suggestive way.