Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Franciscan Missions in the Sierra Gorda of Querétaro' has mentioned 'City' in the following places:
Occurrence Sentence Text Source
Although there had been some city building in this area during the Pre Classic era, with heights between the 6th and 10th centuries, these cities had been abandoned long before the Spanish arrived in the 16th century.