Desire (1936)

spanishcastlemoviemagic.com

Neither Gary Cooper nor Marlene Dietrich actually visited Spain to make this film in 1936, the year the bloody Spanish Civil War began. The American film industry chose to make a film allegedly set in Spain, but filmed entirely in the USA, except for some background scenes shot by a second unit without the stars,

After a stay in San Sebastian in Guipuzcoa, Grant and Dietrich head inland. After leaving a hotel, they drive through some ‘typical’ Spanish scenery, replete with rocky crags and rushing rivers and a castle seen behind them, which is in fact in the city of Toledo and is called San Servando. 

Immediately we see them crossing a bridge, that of San Martin, also in Toledo.