Im fortunate to be from Lusitânia (Portugal ) . Yes visited many castles while living there, can advise you to visit some of the most beautiful. Óbidos (unesco world patrimony ) , Monsaraz, Alvito, Castelo dos mouros Sintra, and Castelo de Almourol .

https://www.vortexmag.net/os-10-castelos-mais-bonitos-de-portugal/

https://www.pinterest.com/sandrathome/castelos-de-portugal/

Left you 2 links that you can have a taste of it. 😊😊 . Happy day to you.