Castle of Alegrete

Portugal

Castle of Alenquer

Portugal

Castle of Alfaiates

Portugal

Castle of Alfeizerão

Portugal

Castle of Alfândega da Fé

Portugal

Castle of Algoso

Portugal

Castle of Aljezur

Portugal

Castle of Aljustrel

Portugal

Castle of Almada

Portugal

Castle of Almourol

Portugal

Castle of Alter Pedroso

Portugal

Castle of Alter do Chão

Portugal

Castle of Alva

Portugal

Castle of Alvito

Portugal

Castle of Alvor

Portugal

Castle of Amieira

Portugal

Castle of Arraiolos

Portugal

Castle of Atalaia

Portugal

Castle of Atouguia da Baleia

Portugal

Castle of Avis

Portugal

Castle of Avô

Portugal

Castle of Barbacena

Portugal

Castle of Barisciano

Italy

Castle of Beja

Portugal

Castle of Belmonte

Portugal

Castle of Belver

Portugal

Castle of Bemposta

Portugal

Castle of Bominaco

Italy

Castle of Borba

Portugal

Castle of Bouka

Greece

Ottoman & Venetian periods

Castle of Braga

Portugal

Castle of Bragança

Portugal

Castle of Cabris

Portugal

Castle of Campo Maior

Portugal

Castle of Carpineto Sinello

Italy

Castle of Carrazeda de Ansiães

Portugal