Signal Festival 2015 featured “Citadels: Lightscape”, a digital art by Matthijs Munnik in Prague.
The beguiling installation Lightscape is composed of two lightboxes filled with a disturbing twinkling light and audio waves emanating at the viewer from all sides. The impression of a hallucination is created by a stroboscopic effect that forms an illusion of various light shapes and patterns.
Programme information from Signal Festival. Short excerpt quoted for reference; see the original page for full text, images and credits.