the bridge over the river and the hydroelectric dam in the background

bridge transport highway overpass infrastructure freeway river waterway reservoir road landmark viaduct arch lane track bridge curve road dam foz-tua mountain electricity douro-river travel hydroelectric river nature landscape sky green tree perspective summer mount highway panorama europe tourism dusk navigate water portugal blue douro forest rural countryside mountains altitude natural scenic plants trees list energy renewable turbines carrazeada-de-ansiães trás-os-montes alto-douro-vinhateiro bragança