In the North-East Region of Portugal, called Trás-os-Montes, the Douro River forms part of the border line between Portugal and Spain, in a stark and isolated place of unique characteristics. It is in this region that the Douro’s narrow canyons are located between magnificent escarpments and cliffs, in a place where nature remains intact. In this paradise, also known as the Arribas do Douro, olive trees and vineyards are grown and some endangered species such as the black storck live.