These are the guns/cannons and an office for the admiral in the back.
Here is my port I made when I was collecting Lego pirates. I just kept adding to it and It got bigger and bigger. Don't ask for any more pictures because it 'fell apart'......(I got bored of it and kind of smashed it up). I still have all the minifigures and the Black Seas Barracuda.
magnificent, very beautiful, what an awesome port, are you as good in building ships as you are in ports ? if you are you should demolish the barracuda and make an awesome ship. Great job, it's fantastic that the theme "Pirate" is popular again.