Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pontcysyllte Aqueduct and Canal' has mentioned 'World Heritage' in the following places:
Occurrence Sentence Text Source
The structure is a Grade I listed building[3] and a UNESCO World Heritage Site.
Contents 1 Etymology 2 History 3 Construction and maintenance 4 World Heritage Site 5 Gallery 6 See also 7 References 8 Further reading 9 External links
World Heritage Site[edit]
The aqueduct and surrounding lands were submitted to the "tentative list" of properties being considered for UNESCO World Heritage Site status in 1999.