Water flows as inspiration and medium throughout Claudia Caviezel's oeuvre. “Watermedia” is the term for one of her favourite mediums – gouache – but it also describes her inspiration for the tiles she designed for the bathing fountain at Vogelsang (Birdsong) settlement in Winterthur, Switzerland. The concrete fountain is the shape of a human eye. An almond-shaped paddling pool clad in Caviezel's tiles forms a shallow saucer for a deep round plunge basin with a perimeter seating ledge. A circle cutout at its base reveals more of Caviezel's tiles which she designed with reference to opus reticulatum – the ancient Roman technique of facing concrete walls with tiles.