In my recently purchased apartment, I've come up with an idea for the hall as a part of interior designing. In my mother-tongue, we have a term for those three pits(?).
Vases in the wall? - I'm not okay with it.
How do we describe this in English? Non native speakers? I'm searching for the term that describes those three (without vases). They are three ______ in/on the wall.
Here is the actual picture