SPACE INVADERS by the artists Sebastian Hungerer and Rainer Kehres, I thought it was a Dale Chihuly thing, like the ceiling at the V&A. But it is a huge (14 x 11 meter) curtain of light fixtures strung in the foyer of a building in Karlsruhe.
The site has big gorgeous pictures and video too. I was looking through it with my young men, who totally responded to it. Mr. Three yelled out, "It's the solar system!" while Big Man pretended the lamps were cherries and made to snatch them off the screen and gobble them up. Well worth the click.