Making something practical into something useful

Concrete block, Science World, Vancouver, BC

You commonly see these concrete blocks as part of a retaining wall, or similar structure. They are also used to ensure that vehicles don't end up where they are not supposed to go. These blocks weigh hundreds, if not thousands, of kilograms and are thus there to stay. But they are also ugly as sin.

That is why I thought that this change to the blocks was so nice. By making a minor change to the design of the mould, the blocks can still fulfill their purpose, and also provide a seat for tired pedestrians. A great modification.