Where to find Portugal's most picturesque castles
Monsaraz Castle: The sturdy walls of this 12th century hilltop castle enclose ancient Monsaraz.
Mértola Castle: Mértola is classified as a museum town. Its 13th century castle is the icing on the cake.
Almourol Castle: This picture perfect medieval castle is perched on top of Almourol islet.
Óbidos Castle: The already picturesque town of Óbidos, with its whitewash cottages and terracotta roofs.
Guimarães Castle: Located in the northern city of Guimarães, this 10th century castle is a national landmark.
Marvão Castle: Standing in the Alentejo near Portugal's border with Spain.
Penedono Castle: The lichen-covered walls of this imposing castle give it a weathered look that befits its long history.
Silves Castle: Probably Roman in origin, this enormous red sandstone castle, located in the Algarve market town.
São Jorge Castle: Lisbon's landmark castle is also one of the city's most popular visitor attractions.
Santa Maria da Feira Castle: A fine example of medieval military architecture, this well-preserved castle is found in Portugal's Aveiro district.