Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Centre (Old Town) of Tallinn' has mentioned 'Fortifications' in the following places:
Occurrence Sentence Text Source
Criterion (iv): The town plan and the buildings within it constitute a remarkable reflection of the coexistence of the seat of feudal overlords and a Hanseatic trading centre within the shelter of a common system of walls and fortifications.
now encompasses the upper town (Toompea), the lower town inside the medieval walls, as well as the 17th century historic fortifications surrounding the entire Old Town, and a range of primarily 19th century structures, streetscapes and views, which today form a green area around the medieval city.