a v - shaped shelf structure has a horizontal shelf part with one end adapted for mounting to a wall and a brace part extending downwardly and rearwardly for the second end of the shelf part , the brace part having an end which rests on the wall , thereby providing support for the shelf part . the shelf structure is provided with mounting means which are invisible when the shelf structure is attached to the wall . the shelf structure in one embodiment contains a honey comb member which comprises the inner portion of the shelf structure , thereby providing a lightweight yet strong shelf .