There are several museums that one can visit here, but nevertheless, it is also perfectly fine to just walk around and admire the view.
I thought I liked the fact that it showcased a wide variety of architectural styles throughout the ages. From the stone walls to the buildings, one can see that this place underwent plenty of renovations and rebuilding efforts as centuries passed. Nowadays, it looks very peaceful and acts as event venues, but it definitely has a military history, and in some areas, you can still see the military offices.
It's a nice place to stroll around. If you want, you can climb up to the walls and see the surrounding area. It provides a very good view of the harbor as well.
