21.   The wall is a microcosm of a city where art well and truly thrived.

22.   The wall is too high to climb over.

23.   The wall is weak and requires lateral support.

24.   The wall should be a load-bearing wall preferably an outside wall.

25.   The wall was long gone, the divided city was united like the country.

26.   The wall was quite damp in places.

27.   The walls are a sort of greeny-blue colour.

28.   The walls are about two meters thick.

29.   The walls are black and slimy with lichen and pigeon shit.

30.   The walls are so thin we can hear the man next door clumping about all day.