Wilhelmusvlug and Patrick Avontuur created “Wishing Well”, a light artwork shown at Amsterdam Light Festival 2012 in Amsterdam, Netherlands.
Wishing Well is an installation that is quite aptly named. It is a wishing well. Visitors can use a coin to make the work interact with them. Circles of light will appear that mimic the rippling of the water.
Programme information from Amsterdam Light Festival. Short excerpt quoted for reference; see the original page for full text, images and credits.