It’s official: more artists should design swimming pools. This brilliantly graphic design was dreamed up in 1970 by the American-Filipino artist Alfonso Ossorio, a master of abstract expressionism. It occupies what was once the artist’s home in East Hampton, Long Island—now the Ossorio Foundation, a space dedicated to his life and work. The pool itself is painted black to allow the water to reflect the ever-changing sky above, while the red and blue Harlequin print that surrounds it symbolises faith, hope, and charity.