Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic and Architectural Complex of the Kazan Kremlin' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
The renowned Pskov architects Postnik Yakovlev and Ivan Shirjay (called Barma) were invited by the Tzar to rebuild the Kazan Kremlin in stone.
In the 12th century, a white stone fortress was constructed, and the city became an outpost on the northern border of Volga Bulgaria.