Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Churches of Chiloé' has mentioned 'Building material' in the following places:
Occurrence Sentence Text Source
Along with their basic architectural design (tower faxc3xa7ade, basilican layout and vaulted ceiling), these sixteen churches are significant for their building material, their construction systems and the expertise demonstrated by the Chilote carpenters, as well as for their interior decoration, particularly the traditional colours and the religious images.
These churches require constant conservation efforts; the nature of the building material and the environmental characteristics make continual maintenance an imperative.