Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Royal Hill of Ambohimanga' has mentioned 'UNESCO World Heritage Sites' in the following places:
Occurrence Sentence Text Source
The hill and its royal fortified city were added to the list of UNESCO World Heritage Sites in 2001 and represent Madagascar's only cultural site following the destruction by fire in 1995 of its historic sister city, the Rova of Antananarivo, shortly before the latter's intended inscription to the list.