Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historical Centre of the City of Arequipa' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
Likewise, the construction techniques -using volcanic stone and the facade engraving works and others- help preserve original and untouched examples that have survived since the 17th century.
The construction techniques using volcanic stone and the fine sculptural work of porticos and other structures engraved in sillar also witness of the technological development and local mixed Baroque art preserving authentic and unaltered examples that have survived since the 17th century.