Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Fort and Shalamar Gardens in Lahore' has mentioned 'Empire' in the following places:
Occurrence Sentence Text Source
In 1981, the fort was inscribed as a UNESCO World Heritage Site for its "outstanding repertoire" of Mughal monuments dating from the era when the empire was at its artistic and aesthetic zenith.
The present design and structure of the fort traces its origins to 1575, when the Mughal Emperor Akbar occupied the site as a post to guard the northwest frontier of the empire.