To easily construct an edge wall with the surface having a natural stone pattern similar to that of a retaining wall body while achieving less site work and a shorter period for constructing the edge wall.

A first stage block and upper stage blocks each having a side face in an approximately parallelogram plate shape are layered with each other. Recessed portions and protruded portions are formed in the upper faces of the blocks and on the lower faces of the upper stage blocks, respectively. One or more upper stage blocks are stacked on the first stage block with the recessed portions being fitted to the protruded portions and the front, reverse and right and left side faces being almost flush with each other.