In the quiet village of Paderne, in southern Portugal's Albufeira district, stands Paderne Castle, an important regional landmark and one of the castles depicted on Portugal's national flag. Considered one of the finest examples of Islamic military architecture in the Iberian Peninsula, it once combined residential and defensive functions while guarding an ancient Roman road. Its walls were raised in rammed earth during the Almohad period, a technique that gives the ruin its warm ochre silhouette above the Quarteira stream. Taken during the Christian reconquest of the Algarve and later abandoned, the site today offers one of the most evocative fortified landscapes in the south.