Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Bourges Cathedral' has mentioned 'Buffer zone' in the following places:

Occurrence Sentence	Text Source
The buffer zone of the property, adopted in 2013, comprises two regulatory protective measures: on the one hand, the protection of its boundaries through its listing as Historic Monument, and on the other, the safeguarding and enhancement plan approved in 1994, for the outstanding heritage site corresponding to the acquisition of the medieval city.	UNESCO