A free-standing wall includes concrete base blocks adjacent to each other forming a base course; a first set of concrete wall blocks stacked on the base course and on each other to form a first wall face; and a second set of concrete wall blocks stacked on the base course and on each other to form a second wall face that faces the opposite direction from the first wall face and that has the same number of courses as the first plurality of wall blocks. Methods of constructing the wall arrangement include laying the base blocks next to each other end to end; stacking individual blocks of a first set of blocks on the base course and then on each other to form a first wall face; stacking individual blocks of the second set of blocks on the base course and then on each other to form a second wall face that faces a direction opposite of the first wall face.

A free-standing wall includes concrete base blocks adjacent to each other forming a base course; a first set of concrete wall blocks stacked on the base course and on each other to form a first wall face; and a second set of concrete wall blocks stacked on the base course and on each other to form a second wall face that faces the opposite direction from the first wall face and that has the same number of courses as the first plurality of wall blocks. Methods of constructing the wall arrangement include laying the base blocks next to each other end to end; stacking individual blocks of a first set of blocks on the base course and then on each other to form a first wall face; stacking individual blocks of the second set of blocks on the base course and then on each other to form a second wall face that faces a direction opposite of the first wall face.

An architectural finish element operable to be placed adjacent similar architectural finish elements to form a finished surface on an architectural structure includes a body formed of a rock-based composite material comprising a low density solid particle additive, a plurality of unitary real stone veneer elements bonded to the body in courses extending in a first direction and in a random non-repetitive pattern, the real stone veneer elements having respective face surfaces generally lying in a plane to form an overall face surface of the architectural finish element. The low density solid particle additive is provided in an amount suitable to cause the architectural finish element to have a density of between about 10 to 15 pounds per square foot. The architectural finishing element may be mounted by mounting a portion of a body of at least one dual architectural finish element support to a surface of an architectural structure.