floating shelf

US /ˈfloʊtɪŋ ʃɛlf/
UK /ˈfloʊtɪŋ ʃɛlf/
"floating shelf" picture
1.

a shelf that is attached to a wall with no visible supports, giving the appearance of floating

:
We installed a floating shelf in the living room to display books.
The minimalist design of the floating shelf complements the modern decor.