Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Birka and Hovgården' has mentioned 'Construction' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| [20] The construction technique of the buildings is still unknown, but the main material was wood. | WIKI |
| Measures are needed to further protect areas of the buffer zone, however, mainly regarding the construction of new buildings. | UNESCO |