Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pergamon and its Multi-Layered Cultural Landscape' has mentioned 'Wall' in the following places:
Occurrence Sentence Text Source
[19] As a result of this ongoing threat, the area of settlement retracted to the citadel, which was protected by a 6-meter-thick (20xc2xa0ft) wall, built of spolia.
He or his successor Attalos I built a wall around the whole upper city, including the plateau to the south, the upper agora and some of the housing - further housing must have been found outside these walls.
The wall, with numerous gates, now surrounded the entire hill, not just the upper city and the flat area to the southwest, all the way to the Selinus river.