Segovia Castle (Alcázar of Segovia) of Spain（西班牙塞哥維亞城堡）

Everyone knows that the only thing cooler than a castle is probably a really big boat. So what happens when you build a castle in the shape of a really big boat? You get Segovia Castle, in the old city of Segovia, ready to plow down anyone coming up the two rivers that run on either side of it before merging in front of its "bow." With its excellent strategic position, it's no surprise that the castle started out as a fort, first built by Arabs around 1120 and then used by monarchs of the Kingdom of Castile throughout the Middle Ages. Since then, it has also been used as a state prison, Royal Artillery College and military academy. Now it's one of the most popular historical sites in Spain.