The Duero below the escarpment of Toro Nature · Toro, Alfoz de Toro, Zamora Image of Toro, not of the place itself. The city looks out from its cliff over the flood plain of the Duero, crossed since the fifteenth century by the main bridge; on the scarp the alcazar was raised as early as the tenth century, built with limestone and river cobbles from the river itself. Photo: usb (CC BY-SA 4.0) What to see and do in Toro