Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Old City of Acre' has mentioned 'Fortifications' in the following places:
Occurrence Sentence Text Source
The Persian-period fortifications at Tell Keisan were later heavily damaged during Alexander's fourth-century B.C.
Thus, he strengthened Acre's fortifications and settled Persians from other parts of Muslim Syria to inhabit the city.
Fortifications had been previously built by the autonomous Emir Ibn Tulun of Egypt, who annexed the city in the 870s, and provided relative safety for merchant ships arriving at the city's port.
Zahir rebuilt Acre's fortifications, using materials from the city's medieval ruins.