Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ivrea, industrial city of the 20th century' has mentioned 'World Heritage' in the following places:
Occurrence Sentence Text Source
On July 1, 2018, the site which is known as "Industrial City of the 20th Century" was listed as a UNESCO World Heritage site.
UNESCO, when it designated the city a World Heritage Site, said that it "expresses a modern vision of the relationship between industrial production and architecture.