in 1982, christensen decorated hjortespring library with 25 elements in stoneware and acrylics depicting the increasing threat to the survival of whales and other endangered animals, the largest item being a blueish black whale. kristensen has also decorated the waiting room at aalborg station (1988) with 18 brightly coloured acrylic plates and, in 1992, completed 30 polychrome glass panels for the ceiling at køge waterpark.