Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Monuments of Novgorod and Surroundings' has mentioned 'Middle Ages' in the following places:
Occurrence Sentence Text Source
Criterion (ii): An outstanding cultural centre, the birthplace of the national style of stone architecture, and one of the oldest national schools of painting, the town of Novgorod influenced the development of Russian art throughout the Middle Ages.
Criterion (iv): With the broad range of monuments conserved in Novgorod, the town is a veritable conservatory of Russian architecture of the Middle Ages and later periods (11th-19th centuries).