Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Historic Centre of Siena' has mentioned 'World Heritage' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The historic centre of Siena has been declared by UNESCO a World Heritage Site. | WIKI |
| A review has been undertaken of the type of communication relating to the values of the World Heritage property using an approach that integrates traditional techniques with contemporary approaches and tools. | UNESCO |
| Activities that will increase tourist visitation to the World Heritage site have been optimized in accordance with the principles of sustainable development by implementing a management system to regulate the number of tourists. | UNESCO |