This completely abandoned area is hidden among the winding narrow streets of Lisbon. I recall it being in the surroundings of Castle Sao Jorge, on the highest hill of the city (here the exact location). The area comprises the remainings of what seems to be a residential area and is now house of cats, street artists and piles of garbage.
It’s really amazing how a whole group of buildings in the middle of the historic center has been abandoned and forgotten for so many years!!