Blocks for constructing retaining walls

The invention comprises a set of two composite masonry blocks, a wall block and an anchor block to construct retaining walls. The wall block is generally trapezoidal in shape and has: a decorative front face opposite and generally parallel to a rear face which defines a key way. The wall block has a top surface which is opposite and generally parallel to a bottom surface. The wall block has side faces which are not parallel so that the width of the rear face is shorter than the width of the front face. An alignment and locking ledge projects downward from the bottom surface and extends across the rear face. The anchor block comprises a first end plate which is opposite and generally parallel to a second end plate. Two parallel side plates extend between and are perpendicular to the first and second end plates. The side plates and the first and second end plates define a central passage. The first end plate further defines a key which is complementary in shape to the wall block key slot and the second end plate defines a key slot which is complementary in shape to the key. The anchor block is shorter in height than the wall block and the anchor block key is shorter in height than the wall block key way. Further, the anchor block may include a central plate, located between and positioned generally parallel to the end plates, extends between and is generally perpendicular to the side plates.