The Rio di San Leonardo was interred in 1818, ostensibly for economic reasons, even though the locals complained.
Rio del Isola was a canal in Venice which was filled in and joined up with the Lista di Spagna to form the start of the current Strada Nova
The Sestiere Castello is the easternmost of the six sestieri of Venice, and the largest and populous.
In Venice everybody walks, but why has Venice become a pedestrian city, when it is constructed around canals and boats.