Alcañiz Courtyard
I have written about our stay in the Spanish Castle before. The short version is this castle was the birthplace to modern Spain. King Ferdinand II (of Aragon) and Queen Isabella I (of Castille) were married here, setting the stage for the unification of Spain.
It's an amazing place and if you ever find yourself in the middle of Spain, I highly suggest you spend a few nights in the castle of Alcañiz!