Concrete, open shelves.   I created somewhat thinner concrete shelves for my own kitchen (beneath poured-in-place countertops). Very attractive and strong. Would like to do downstairs bathroom next.

Kitchen Concrete Interiors: The polished concrete kitchen island with open shelving in this photo from French magazine Maison Cote du Sud, provides plenty of storage and workspace, and lends some edge to the somewhat rustic room.

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