Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Van Nellefabriek' has mentioned 'Wall' in the following places:
Occurrence Sentence Text Source
[citation needed]} It is claimed that the building featured the first industrially prefabricated curtain wall in the world.
Supported on an internal structure of reinforced concrete, the facades of the main buildings consist essentially of steel and glass, making large-scale use of the curtain wall principle.
Criterion (iv): In the context of industrial architecture in the first half of the 20th century, the Van Nellefabriek is an outstanding illustration of the values of relationships with the environment, the rational organisation of production flows, and dispatch via the nearby communication network, maximum admission of daylight to the internal spaces via the widespread use of a glass curtain wall with metal frames, and open interior spaces.