Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Castel del Monte' has mentioned 'Wall' in the following places:
Occurrence Sentence Text Source
It has neither a moat nor a drawbridge and some considered it never to have been intended as a defensive fortress;[1] however, archaeological work has suggested that it originally had a curtain wall.
Because of its relatively small size, it was once considered to be no more than a "hunting lodge", but scholars now believe it originally had a curtain wall and did serve as a citadel.
The main wall is 25xc2xa0m high and the eight bastions each 26xc2xa0m. The sides of the main octagon are 16.5xc2xa0m long and those of the octagonal towers each 3.1xc2xa0m. The castle has a diameter of 56xc2xa0m. Its main entrance faces east.