Oh my I need this it looks like the ocean. How awesome would that be in a garden. Succulent border - Massed Echeveria elegans with pots of what looks like Echeveria ' Perle von Nurnberg' Maybe use dark mondo grass for the contrasting plants?
Use Your House Look at the lines of your home -- it might give you the perfect spot to place a deck (and make mowing or other yard-maintenance chores easier to boot). This deck-and-pergola combination, for example, is a perfect solution for an odd space.