This 2001 Italian animated series was conceived and created by Disney comics legend Romano Scarpa! Scarpa got the idea for "Sopra i tetti di Venezia" (directly translated: "Above the Rooftops of Venice") already in the 80s and made a cartoon pilot in 1997, which became the basis for the finished 2001 show seen in this international sales trailer. If anyone has Scarpa's original 1997 pilot (which I've never seen), I'd LOVE to see it uploaded online! :)
For more information about Romano Scarpa's "Sopra i tetti di Venezia", see this excellent site: http://www.romanoscarpa.net/cartoni/sopra-i-tetti-di-venezia