4Castillo de Almodóvar del Río (Córdoba)

Rising above the Guadalquivir River, this imposing fortress near Córdoba has origins dating back to the Romans and later fortified by the Moors.

Restored extensively in the 20th century, it retains its medieval majesty with towering walls and dramatic battlements. The castle offers sweeping views of the Andalusian countryside, but it’s also famous among pop culture fans—it served as Highgarden in Game of Thrones. Its blend of history and fantasy makes it a must-visit.