Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monastery of the Hieronymites and Tower of Belém in Lisbon' has mentioned 'World Heritage' in the following places:
Occurrence Sentence Text Source
It was classified a UNESCO World Heritage Site, along with the nearby Tower of Belxc3xa9m, in 1983.
In 1983, UNESCO formally designated the Monastery of the Hieronymites and Tower of Belxc3xa9m as a World Heritage Site.
This serial World Heritage property comprises the Monastery of the Hieronymites and the Tower of Belxc3xa9m, both known as the complex of Belxc3xa9m, located on the shore of the Tagus River at the entrance to the port of Lisbon.