Romantic-looking Castillo de Butròn in Gatika, Basque Country, Spain. Altho the original castle dates to the Middle Ages, the current building is late century. I love the look, but it seems to have been an unfortunate folly.
Poland Travel Inspiration - Aussiegirl Castles Medieval Castle in Goluchow, Poland. Almost impossible to defend unless there is a very steep and deep gorge all around it but a beautiful piece of architecture nonetheless.
Medieval Alnwick Castle, Northumberland, England, built in Ancestral home to the Duke of Northumberland George Percy (who is now dating Pippa Middleton) and Hogwarts Castle set for the Harry Potter films.