One very good reason to travel to #Hamburg, #LightArt-wise is Galerie Watson at Milchstraße 2. It's one of the very few galleries specialised in light (and media) art, and does it pretty well. Now on display is a group exhibition Natur & Technik, with art works from artists like #KeithSonnier, #RegineSchumann, and #JacquelineHen.