i meet pier-francesco maran, deputy mayor for urban planning and green areas at the naviglio grande,e of only three canals still open. all the others, some of which were designed by a certain leonardo da vinci - you might have heard of him - were coverted up and transformed into, you guessed it, roads. but hey, the good news: the city plans to reopen eight kilometers of these forgotten treasures. tell me about the actual process. it seems like an enormous project to uncover all of these canals. i guess the citizens also deserve that you explain the consequences, right? do you find that a lot of the milanese are surprised to learn that there are canals under some of the roads? the younger generation maybe doesn't even know about this. they know? he's just riding his bike and coaching the rowers. that's awesome, man! that's so cool. - the idea, of course, is to recreate places as vibrant as the naviglio grande all around the city and even in the periphery. but the project also serves environmental and sustainable purposes. historically, did you have the same problem of flooding in the