Not exactly a sundial, but demonstrating solar awareness. “Architects at the firm NBBJ in London decided to see if they could come up with an entirely shadowless building. They used computer modeling to design a pair of buildings, one of which works like a gigantic, curved mirror. The glass surface of the northernmost building reflects light down into the shadow cast by its southern partner. And the carefully defined curve of that glass allows the reflected light to follow the shadow throughout the day.”
http://www.wired.com/2015/03/plan-build-skyscraper-doesnt-cast-shadow/ --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
