The Institute is located in a historical residence that is at least two hundred years old. The building was once a residence of a wealthy family who donated it to the Country of Montenegro. If you look carefully at the first of these images, you see a small chapel in the background. This chapel is still owned by the family and is used occasionally for small scale services.
The buoys in two of these images are floats used in mussel production. I learned that mussels are raised on ropes of varying length as shown in the image I found online.
Many people have a few buoys close to the water front. This represents another example of how food can be produced in small quantities and limited spaces.