Abstract: Retaining wall blocks and the walls made from such blocks are disclosed, wherein curved landscapes (i.e. curved profiles and sloping embankments) are easily accommodated without the use of mortar. As well, a modular system of blocks and their manufacture are disclosed wherein some blocks are used in vertical orientations and some in horizontal orientations.

Abstract: There is provided a block (100) comprising a front wall (110); a rear wall (130); first side wall (115); second side wall (120) opposed to said first side wall (115); an upper block planar surface (140); a lower block planar surface (141); wherein said first side wall (115) and said second side wall (120) extend from said front wall (110) to said rear wall (130) to define a central through core (150) extending through the block (100) from said upper block surface (140) to said lower block surface (141), said core (150) having a front upper rim and a first front corner at the plane of said upper block surface, proximate intersection of said first side wall and said front wall; a first lug which extends downwardly from said lower block surface adjacent said first side wall, and has (i) a flat side portion flush with said first side wall and (ii) a front portion which joint said first lug side surface at an angle of 90° or less.

Abstract: A block useful for constructing retaining walls for gardens, has two bottom lugs or knobs, bracketing an internal cavity. The cavity may be filled with soil. In forming a wall, the upper row of blocks is rearwardly onset from the lower row of blocks, whereby the lugs of the blocks of the upper row abutting the back surfaces of the blocks of the lower row.