From the Exploration Unit
Here's a cool fort in Portugal I discovered online. How perfect is this??
This place was once a troubled monastery (pirates and bad weather) and was eventually abandoned. Then the king of Portugal was informed that it would be a great place to have a fortress, so he ordered construction on that and in 1678 they finally finished it.
I'm pretty sure this is the foundation of a thousand different environment concept designs for castles, fortresses, and evil lairs. Would love to visit this in person some day.
Here's more info about it: LINK
And here's a informative guide to visiting this island: LINK
-Jake