Analysis of information sources in references of the Wikipedia article "Niche (architecture)" in English language version.
Blind niche: a shallow niche, usually a purely decorative feature of a wall.
Blind niches, or niches devoid of sculpture, also function as blind windows that do not open to the outside
The design must have given the viewer the impression of a monumental hall with many rooms adjoined – the blind niches specifically designed and situated to resemble doors
